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Best Seller
Guntec USA AR-15 5.56mm Complete Upper Kit Black GT-C-UPPER-5.5-MLK-MINI

Guntec USA AR-15 5.56mm Complete Upper Kit Black GT-C-UPPER-5.5-MLK-MINI

Guntec USA AR-15 5.56mm Complete Upper Kit Black GT-C-UPPER-5.5-MLK-MINI. The goal is to distribute excellent quality at an economical value. Specifications for Guntec USA AR-15 5.56mm Complete Upper Kit: Manufacturer: Guntec USA Threads per Inch:... ... more

Guntec USA AR-15 5.56mm Complete Upper Kit Black GT-C-UPPER-5.5-MLK-MINI

Guntec USA AR-15 5.56mm Complete Upper Kit Black GT-C-UPPER-5.5-MLK-MINI. The goal is to distribute excellent quality at an economical value. Specifications for Guntec USA AR-15 5.56mm Complete Upper Kit: Manufacturer: Guntec USA Threads per Inch:...

Optics Planet

$569.00

FREE shipping

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TacFire Complete Upper Receiver AR-15 Lower Parts Kit 5.56mm 7.5in Barrel Pistol Length 7in M-LOK Handguard Anodized Black PK556-LPK

TacFire Complete Upper Receiver AR-15 Lower Parts Kit 5.56mm 7.5in Barrel Pistol Length 7in M-LOK Handguard Anodized Black PK556-LPK

TacFire Complete Upper Receiver AR-15 Lower Parts Kit 5.56mm 7.5in Barrel Pistol Length 7in M-LOK Handguard Anodized Black PK556-LPK. Everything you need to build out your 5.56 pistol just add a lower receiver. Includes : 7.5" Barrel Low profile gas... ... more

TacFire Complete Upper Receiver AR-15 Lower Parts Kit 5.56mm 7.5in Barrel Pistol Length 7in M-LOK Handguard Anodized Black PK556-LPK

TacFire Complete Upper Receiver AR-15 Lower Parts Kit 5.56mm 7.5in Barrel Pistol Length 7in M-LOK Handguard Anodized Black PK556-LPK. Everything you need to build out your 5.56 pistol just add a lower receiver. Includes : 7.5" Barrel Low profile gas...

Optics Planet

$439.99

FREE shipping

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Best Seller
Tiger Rock AR-15 Rifle Build Kit BCG LPK and Stock Kit 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 10in Quad Rail Handguard Brake Nitride

Tiger Rock AR-15 Rifle Build Kit BCG LPK and Stock Kit 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 10in Quad Rail Handguard Brake Nitride

Tiger Rock AR-15 Rifle Build Kit BCG LPK and Stock Kit 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 10in Quad Rail Handguard Brake Nitride. Lower receiver is not included. Specifications for Tiger Rock 5.56mm AR-15 Rifle Build Kit:... ... more

Tiger Rock AR-15 Rifle Build Kit BCG LPK and Stock Kit 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 10in Quad Rail Handguard Brake Nitride

Tiger Rock AR-15 Rifle Build Kit BCG LPK and Stock Kit 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 10in Quad Rail Handguard Brake Nitride. Lower receiver is not included. Specifications for Tiger Rock 5.56mm AR-15 Rifle Build Kit:...

Optics Planet

$470.95

FREE shipping

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Aero Ar-15 Assembled Upper 5.56mm Build Kits - Build Kit 5.56mm Assembled Upper 16" Carbine 12" Hg B

Aero Ar-15 Assembled Upper 5.56mm Build Kits - Build Kit 5.56mm Assembled Upper 16" Carbine 12" Hg B

$20 off $200+. Use code SEPT20

Why buy a complete rifle, only to discard half (or more) of its parts as you customize it? Money down the drain! Our Aero Precision AR-15 Upper Bundles contain the three core components: receiver, barrel, and an extended M-LOK handguard. You purchase... ... more

Aero Ar-15 Assembled Upper 5.56mm Build Kits - Build Kit 5.56mm Assembled Upper 16" Carbine 12" Hg B

Why buy a complete rifle, only to discard half (or more) of its parts as you customize it? Money down the drain! Our Aero Precision AR-15 Upper Bundles contain the three core components: receiver, barrel, and an extended M-LOK handguard. You purchase...

$440.99

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Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto

Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto

If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver with... ... more

Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto

If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver with...

$149.99

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Luth-AR Lightweight Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized

Luth-AR Lightweight Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized

Luth-AR Lightweight Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized. 56 Lightweight Minus Lower Receiver Kit you can build out an entirely new AR except for the stripped... ... more

Luth-AR Lightweight Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized

Luth-AR Lightweight Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized. 56 Lightweight Minus Lower Receiver Kit you can build out an entirely new AR except for the stripped...

Optics Planet

$604.99

FREE shipping

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Lightweight Kit Minus Lower Receiver w/ Col. Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized Man.

Lightweight Kit Minus Lower Receiver w/ Col. Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized Man.

Lightweight Kit Minus Lower Receiver w/ Col. Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized Man.. 56 Lightweight Minus Lower Receiver Kit you can build out an entirely new AR except for the stripped... ... more

Lightweight Kit Minus Lower Receiver w/ Col. Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized Man.

Lightweight Kit Minus Lower Receiver w/ Col. Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized Man.. 56 Lightweight Minus Lower Receiver Kit you can build out an entirely new AR except for the stripped...

Optics Planet

$624.99

FREE shipping

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Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard Black APAR712703M29

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard Black APAR712703M29

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard Black APAR712703M29. The R-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight build. The... ... more

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard Black APAR712703M29

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard Black APAR712703M29. The R-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight build. The...

Optics Planet

$464.99

FREE shipping

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Tiger Rock AR-15 Barrel BCG LPK and Rogers Stock 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 15in M-Lok Handguard Brake Nitride Anodized

Tiger Rock AR-15 Barrel BCG LPK and Rogers Stock 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 15in M-Lok Handguard Brake Nitride Anodized

Tiger Rock AR-15 Barrel BCG LPK and Rogers Stock 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 15in M-Lok Handguard Brake Nitride Anodized. This combo kit includes everything you need to complete your upper receiver build and is sure to provide... ... more

Tiger Rock AR-15 Barrel BCG LPK and Rogers Stock 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 15in M-Lok Handguard Brake Nitride Anodized

Tiger Rock AR-15 Barrel BCG LPK and Rogers Stock 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 15in M-Lok Handguard Brake Nitride Anodized. This combo kit includes everything you need to complete your upper receiver build and is sure to provide...

Optics Planet

$544.95

FREE shipping

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LaRue Tactical Stealth A3Threaded Barrel AR Platform AR-15 16in 5.56mm Mid Length 1/8 Twist 1/2x28 Thread Black LT15-6S-M-223-8-16-Y-1M-A3

LaRue Tactical Stealth A3Threaded Barrel AR Platform AR-15 16in 5.56mm Mid Length 1/8 Twist 1/2x28 Thread Black LT15-6S-M-223-8-16-Y-1M-A3

LaRue Tactical Stealth A3Threaded Barrel AR Platform AR-15 16in 5.56mm Mid Length 1/8 Twist 1/2x28 Thread Black LT15-6S-M-223-8-16-Y-1M-A3. Stealth Uppers are considered by many to be the finest improvement that can be made to a stock AR15 Rifle.... ... more

LaRue Tactical Stealth A3Threaded Barrel AR Platform AR-15 16in 5.56mm Mid Length 1/8 Twist 1/2x28 Thread Black LT15-6S-M-223-8-16-Y-1M-A3

LaRue Tactical Stealth A3Threaded Barrel AR Platform AR-15 16in 5.56mm Mid Length 1/8 Twist 1/2x28 Thread Black LT15-6S-M-223-8-16-Y-1M-A3. Stealth Uppers are considered by many to be the finest improvement that can be made to a stock AR15 Rifle....

Optics Planet

$349.99

FREE shipping

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Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard FDE APAR712713M29

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard FDE APAR712713M29

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard FDE APAR712713M29. The R-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight build. The... ... more

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard FDE APAR712713M29

Aero Precision M4E1-T Complete Upper Receiver 5.56mm 11.5in Carbine Length R-One M-LOK Handguard FDE APAR712713M29. The R-ONE line of handguards are designed with size and weight in mind providing the perfect addition to your lightweight build. The...

Optics Planet

$494.99

FREE shipping

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Alexander Arms DIY Upper Kit AR-15 6.5mm Grendel 16 inch Barrel Mid Length 1-8 Twist 5/8x24 Thread Matte Black Melonite KIT-65-16-10RD

Alexander Arms DIY Upper Kit AR-15 6.5mm Grendel 16 inch Barrel Mid Length 1-8 Twist 5/8x24 Thread Matte Black Melonite KIT-65-16-10RD

Alexander Arms DIY Upper Kit AR-15 6.5mm Grendel 16 inch Barrel Mid Length 1-8 Twist 5/8x24 Thread Matte Black Melonite KIT-65-16-10RD. Specifications for Alexander Arms AR-15 6.5mm Grendel DIY Upper Kit: Manufacturer: Alexander Arms Cartridge: 6.5mm... ... more

Alexander Arms DIY Upper Kit AR-15 6.5mm Grendel 16 inch Barrel Mid Length 1-8 Twist 5/8x24 Thread Matte Black Melonite KIT-65-16-10RD

Alexander Arms DIY Upper Kit AR-15 6.5mm Grendel 16 inch Barrel Mid Length 1-8 Twist 5/8x24 Thread Matte Black Melonite KIT-65-16-10RD. Specifications for Alexander Arms AR-15 6.5mm Grendel DIY Upper Kit: Manufacturer: Alexander Arms Cartridge: 6.5mm...

Optics Planet

$762.95

FREE shipping

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56mm Assembled

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56mm Assembled

$55 off $500+. Use code SEPT55

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56mm Assembled

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$569.99

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56mm Assembled

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56mm Assembled

$55 off $500+. Use code SEPT55

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56mm Assembled

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$534.99

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Sharps Bros Ar-15/M4 5.56mm Complete Upper - Ar-15/M4 5.56mm 16" Bbl 15" Handguard Complete Upper

Sharps Bros Ar-15/M4 5.56mm Complete Upper - Ar-15/M4 5.56mm 16" Bbl 15" Handguard Complete Upper

$55 off $500+. Use code SEPT55

Complete Sharps Bros SBUR04 upper with 15" full top rail handguard. 16" AR15 Upper, 5.56 CAL, 15" Handguard, M16 black DLC coated BCG, Radian Charging Handle, Mid Length Gas System. Full Top Rail. MLOK 7 sides. Total Weight of complete upper (including... ... more

Sharps Bros Ar-15/M4 5.56mm Complete Upper - Ar-15/M4 5.56mm 16" Bbl 15" Handguard Complete Upper

Complete Sharps Bros SBUR04 upper with 15" full top rail handguard. 16" AR15 Upper, 5.56 CAL, 15" Handguard, M16 black DLC coated BCG, Radian Charging Handle, Mid Length Gas System. Full Top Rail. MLOK 7 sides. Total Weight of complete upper (including...

$799.99

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AIM Sports Inc Complete Rifle Build Kit AR-15 5.56x45mm NATO 16-inch Barrel Mid-Length Gas Tube Low Profile Gas Block Black Hardcoat Anodized Aluminum

AIM Sports Inc Complete Rifle Build Kit AR-15 5.56x45mm NATO 16-inch Barrel Mid-Length Gas Tube Low Profile Gas Block Black Hardcoat Anodized Aluminum

AIM Sports Inc Complete Rifle Build Kit AR-15 5.56x45mm NATO 16-inch Barrel Mid-Length Gas Tube Low Profile Gas Block Black Hardcoat Anodized Aluminum. Specifications for AIM Sports Inc 16-inch AR-15 Complete Rifle Build Kit: Manufacturer: AIM Sports... ... more

AIM Sports Inc Complete Rifle Build Kit AR-15 5.56x45mm NATO 16-inch Barrel Mid-Length Gas Tube Low Profile Gas Block Black Hardcoat Anodized Aluminum

AIM Sports Inc Complete Rifle Build Kit AR-15 5.56x45mm NATO 16-inch Barrel Mid-Length Gas Tube Low Profile Gas Block Black Hardcoat Anodized Aluminum. Specifications for AIM Sports Inc 16-inch AR-15 Complete Rifle Build Kit: Manufacturer: AIM Sports...

Optics Planet

$599.99

FREE shipping

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Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto

Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto

If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver with... ... more

Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto

If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver with...

$139.99

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Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N

Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N

This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting... ... more

Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N

This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting...

$169.99

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Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N

Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N

This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting... ... more

Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N

This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting...

$189.99

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Aero Precision Ar-15 M4e1 Enhanced Upper Receiver - M4e1 Enhanced 5.56mm Assembled Upper Receiver Fo

Aero Precision Ar-15 M4e1 Enhanced Upper Receiver - M4e1 Enhanced 5.56mm Assembled Upper Receiver Fo

Aero Precision's M4E1 Enhanced Upper Receiver is a new take on the way the handguard attaches to the upper receiver on AR-15/M16 platforms. The upper receiver is made from forged 7075 T6 aluminum with the handguard mounting platform forged as an... ... more

Aero Precision Ar-15 M4e1 Enhanced Upper Receiver - M4e1 Enhanced 5.56mm Assembled Upper Receiver Fo

Aero Precision's M4E1 Enhanced Upper Receiver is a new take on the way the handguard attaches to the upper receiver on AR-15/M16 platforms. The upper receiver is made from forged 7075 T6 aluminum with the handguard mounting platform forged as an...

$199.99

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Aero Precision Ar-15 Assembled Upper Receiver 5.56mm - 5.56 Nato Assembld Upper Rcvr No Forward Assi

Aero Precision Ar-15 Assembled Upper Receiver 5.56mm - 5.56 Nato Assembld Upper Rcvr No Forward Assi

The AR15 Assembled Upper Receiver comes with the port door already installed. This specific model does not have forward assist provisions. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and... ... more

Aero Precision Ar-15 Assembled Upper Receiver 5.56mm - 5.56 Nato Assembld Upper Rcvr No Forward Assi

The AR15 Assembled Upper Receiver comes with the port door already installed. This specific model does not have forward assist provisions. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and...

$109.99

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Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to... ... more

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to...

$159.99

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Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to... ... more

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to...

$159.99

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Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to... ... more

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to...

$159.99

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Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to... ... more

Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc

The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to...

$174.99

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

$20 off $200+. Use code SEPT20

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$454.99

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assembled Up

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assembled Up

$55 off $500+. Use code SEPT55

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assembled Up

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$599.99

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

$20 off $200+. Use code SEPT20

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$484.99

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Aero Precision M4e1 Upper Receivers Complete Threaded 5.56mm - M4e1 5.56 Assembled Upper Govt 18" Bb

Aero Precision M4e1 Upper Receivers Complete Threaded 5.56mm - M4e1 5.56 Assembled Upper Govt 18" Bb

$55 off $500+. Use code SEPT55

This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 Upper Receivers Complete Threaded 5.56mm - M4e1 5.56 Assembled Upper Govt 18" Bb

This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$599.99

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

$55 off $500+. Use code SEPT55

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assem Upper

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$574.99

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assembld Up

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assembld Up

$55 off $500+. Use code SEPT55

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Atlas R-One Handguard - M4e1 5.56 Assembld Up

This assembled upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their...

$549.99

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Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Gen-2 Handguard & Fsb - M4e1 5.56 Assm Uppr Rc

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Gen-2 Handguard & Fsb - M4e1 5.56 Assm Uppr Rc

$55 off $500+. Use code SEPT55

Aero Precision's M4E1 5.56mm 10.5" Carbine Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two most popular components for customization. At its heart is Aero's forged M4E1 receiver that combines the... ... more

Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Gen-2 Handguard & Fsb - M4e1 5.56 Assm Uppr Rc

Aero Precision's M4E1 5.56mm 10.5" Carbine Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two most popular components for customization. At its heart is Aero's forged M4E1 receiver that combines the...

$529.99

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Geissele Automatics Ar-15 Super Duty Rifle Build Kit 5.56mm - Brownells Geissele 5.56 Super Duty Rif

Geissele Automatics Ar-15 Super Duty Rifle Build Kit 5.56mm - Brownells Geissele 5.56 Super Duty Rif

$130 off $1000+. Use code SEPT130

The Geissele Super Duty Build kit features the quality and workmanship you've come to expect from the Geissele name. The complete upper, chambered in 5.56mm, features a Nanoweapon-coated Surefire Closed-Tine Flash Hider mounted to an in-house durable... ... more

Geissele Automatics Ar-15 Super Duty Rifle Build Kit 5.56mm - Brownells Geissele 5.56 Super Duty Rif

The Geissele Super Duty Build kit features the quality and workmanship you've come to expect from the Geissele name. The complete upper, chambered in 5.56mm, features a Nanoweapon-coated Surefire Closed-Tine Flash Hider mounted to an in-house durable...

$1,700.00

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Aero Precision M4e1 Assembled Upper Receiver 18" 5.56 Rifle Length - M4e1 5.56mm Assem Uppr Rcvr Gov

Aero Precision M4e1 Assembled Upper Receiver 18" 5.56 Rifle Length - M4e1 5.56mm Assem Uppr Rcvr Gov

$55 off $500+. Use code SEPT55

The M4E1 5.56mm 18" Rifle Upper Receiver adds two important benefits to Aero Precision's M4E1 carbine upper. First, the longer 18" barrel imparts extra velocity to the bullet with a very small addition to the rifle's OAL. Second, the longer... ... more

Aero Precision M4e1 Assembled Upper Receiver 18" 5.56 Rifle Length - M4e1 5.56mm Assem Uppr Rcvr Gov

The M4E1 5.56mm 18" Rifle Upper Receiver adds two important benefits to Aero Precision's M4E1 carbine upper. First, the longer 18" barrel imparts extra velocity to the bullet with a very small addition to the rifle's OAL. Second, the longer...

$599.99

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Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

$20 off $200+. Use code SEPT20

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily... ... more

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily...

$344.74

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Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

$20 off $200+. Use code SEPT20

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily... ... more

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily...

$344.74

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Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

$20 off $200+. Use code SEPT20

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily... ... more

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily...

$344.74

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Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

$20 off $200+. Use code SEPT20

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily... ... more

Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm

The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be easily...

$361.97

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Brownells Brn-15 Upper Receivers 5.56mm Nato - Brn-15 16" Upper Receiver Assembly .750" Gas Block 5.

Brownells Brn-15 Upper Receivers 5.56mm Nato - Brn-15 16" Upper Receiver Assembly .750" Gas Block 5.

$20 off $200+. Use code SEPT20

Manufactured in the US with the highest quality components, the BRN-15 Upper Receiver Groups are great starts for your next build. Pick your preferred bolt carrier group and charging handle to complete. The BRN-15 Upper Receiver Groups feature a... ... more

Brownells Brn-15 Upper Receivers 5.56mm Nato - Brn-15 16" Upper Receiver Assembly .750" Gas Block 5.

Manufactured in the US with the highest quality components, the BRN-15 Upper Receiver Groups are great starts for your next build. Pick your preferred bolt carrier group and charging handle to complete. The BRN-15 Upper Receiver Groups feature a...

$349.99

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