SLR B15 Billet Upper 5.56 Receiver Black SLRB-15-UPP 556

Dark Storm Industries DS-15 Complete Upper 16" Lightning 5.56 Threaded Black 5.56 DSI-UC5-LGT-T5-BLK

Dark Storm Industries DS-15 Complete Upper 16" Lightning 5.56 Threaded Black 5.56 DSI-UC5-LGT-T5-BLK. 750 Micro Gas Block and Carbine Gas System. Specifications for Dark Storm Industries DS-15 16" Lightning 5.56 Upper Receiver: Manufacturer: Dark Storm... ... more

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 12.5 in RA-MK1-12.5-PU-BLK

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 12.5 in RA-MK1-12.5-PU-BLK. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a Rainier Arms Low Pro nonadjustable gas... ... more

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 16in 5.56 Mid SM15 Anodized Black APAR712105M7

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 16in 5.56 Mid SM15 Anodized Black APAR712105M7. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting platform with the upper receiver itself.... ... more

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine RM9.2 Anodized Black APAR712702M2

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine RM9.2 Anodized Black APAR712702M2. The included ATLAS R-ONE Handguard is designed with size and weight in mind while still providing plenty of real-estate to... ... more

Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 12.5 in RA-RUC-PRO-MK2-125-PU

Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 12.5 in RA-RUC-PRO-MK2-125-PU. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a Rainier Arms Low Pro nonadjustable gas... ... more

Aero Precision Complete Upper Receiver M4E1-T 5.56 16in M4 Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M6

Aero Precision Complete Upper Receiver M4E1-T 5.56 16in M4 Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M6. Specifications for Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider: Manufacturer:... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel NJ Compliant M4 Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15101113

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel NJ Compliant M4 Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15101113. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 11.5in Carbine Length 1-7 Twist 10.3in ATLAS S-ONE Handguard A2 Flash Hider Cerakote OD

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 11.5in Carbine Length 1-7 Twist 10.3in ATLAS S-ONE Handguard A2 Flash Hider Cerakote OD. 5in 5.56 w/ ATLAS S-ONE w/ A2 Flash Hider Handguard Complete Upper Receiver. Each of these AR15 Upper... ... more

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Maryland Compliant Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Maryland Compliant Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights... ... more

Iron Horse DMR Complete Upper 5.56 NATO Receiver Black IH-CU1

Iron Horse DMR Complete Upper 5.56 NATO Receiver Black IH-CU1. 5in 7075 hand-guard 7075 billet upper proprietary barrel nut and sleeve for maximum accuracy. Chambered in 5.56 Nato 18in Faxon 1-8T barrel w/ rifle length gas system and adjustable gas... ... more

Dark Storm Industries DS-15 Complete Upper 16" MOE 5.56 Non-Threaded Black 5.56 DSI-UC5-MOE-N5-BLK

Dark Storm Industries DS-15 Complete Upper 16" MOE 5.56 Non-Threaded Black 5.56 DSI-UC5-MOE-N5-BLK. Specifications for Dark Storm Industries DS-15 16" MOE 5.56 Upper Receiver: Manufacturer: Dark Storm Industries Cartridge: 5.56x45mm NATO Barrel Length:... ... more

Aero Precision Complete Upper Receiver M4E1-T 20in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M48

Aero Precision Complete Upper Receiver M4E1-T 20in 5.56 Rifle Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black APAR700305M48. Aero Precision built these AR Handguards & Barrels with their ATLAS S-ONE Handguard and 20in 5.56 Rifle length... ... more

Midwest Industries 10.5in CARBINE-LENGTH UPPER RECEIVER GROUP M-LOK 5.56 1/7 TWIST BARREL BLACK MI-556CRM9-U

Midwest Industries 10.5in CARBINE-LENGTH UPPER RECEIVER GROUP M-LOK 5.56 1/7 TWIST BARREL BLACK MI-556CRM9-U. 5" CARBINE-LENGTH UPPER RECEIVER GROUP M-LOK 5.56 1:7 BARREL BLACK Specifications for Midwest Industries 10.5in CARBINE-LENGTH UPPER RECEIVER... ... more

Dark Storm Industries DS-15 Complete Upper 16" MOE 5.56 Threaded Black 5.56 DSI-UC5-MOE-T5-BLK

Dark Storm Industries DS-15 Complete Upper 16" MOE 5.56 Threaded Black 5.56 DSI-UC5-MOE-T5-BLK. Specifications for Dark Storm Industries DS-15 16" MOE 5.56 Upper Receiver: Manufacturer: Dark Storm Industries Cartridge: 5.56x45mm NATO Barrel Length: 16... ... more

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 16 in RA-MK1-16-PU-BLK

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 16 in RA-MK1-16-PU-BLK. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a Rainier Arms Low Pro nonadjustable gas block... ... more

Dark Storm Industries DS-15 Typhoon Complete Upper Receiver 5.56 NATO 7.5in Barrel M4 Pistol Profile 1-7 Twist 1/2x28 Thread M-Lok Firestorm Type III

Dark Storm Industries DS-15 Typhoon Complete Upper Receiver 5.56 NATO 7.5in Barrel M4 Pistol Profile 1-7 Twist 1/2x28 Thread M-Lok Firestorm Type III. 750 Micro Gas Block andPistol Gas System DSI 7.5" SOCOM 5.56 Threaded 1:7 Nitrite Barrel andDSI... ... more

Aero Precision Complete Upper w/ No Forward Assist M4E1-T 5.56 8in 5.56 Pistol Barrel RM7.3 Anodized Black APAR712701M102

Aero Precision Complete Upper w/ No Forward Assist M4E1-T 5.56 8in 5.56 Pistol Barrel RM7.3 Anodized Black APAR712701M102. 56 Complete Upper with Flash Hider w/ No Forward Assist then you've found yourself in the right spot.. These AR15 Upper Receivers... ... more

Aero Precision Complete Upper Receiver M4E1-T 14.5in 5.56 Carbine Length Barrel 12in M-LOK ATLAS S-ONE Handguard Flat Dark Earth APAR700314M32

Aero Precision Complete Upper Receiver M4E1-T 14.5in 5.56 Carbine Length Barrel 12in M-LOK ATLAS S-ONE Handguard Flat Dark Earth APAR700314M32. The S-ONE line of handguards are designed with size and weight in mind providing the perfect addition to... ... more

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 16in 5.56 Mid RM15 FDE APAR712715M7

Aero Precision M4E1 Threaded No Forward Assist Complete Upper Receiver 16in 5.56 Mid RM15 FDE APAR712715M7. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard mounting platform with the upper receiver itself. Through... ... more

Brigade Manufacturing AR Complete Upper Receiver Forged 5.56 7.5 inch Barrel Tungsten Charging Handle 7 inch Rail A2 Flash Hider U5617530

Brigade Manufacturing AR Complete Upper Receiver Forged 5.56 7.5 inch Barrel Tungsten Charging Handle 7 inch Rail A2 Flash Hider U5617530. 5 Upper is a lightweight forged upper designed to be the ideal platform for your next project. With the 7.5-inch... ... more

Spikes Tactical Upper 5.56 16in Midlength LE w/BLK M-LOK Handguard & FSP STU5035-MMS

Spikes Tactical Upper 5.56 16in Midlength LE w/BLK M-LOK Handguard & FSP STU5035-MMS. 56 LE Midlength 16in Forged Upper Receiver that's inspected and ready to function right out of the box. Spikes Tactical crafted these AR15 Upper Receivers from 7075... ... more

Spikes Tactical Upper 5.56 16in Midlength LE w/MOE BLK SL Handguard STU5035-SLB

Spikes Tactical Upper 5.56 16in Midlength LE w/MOE BLK SL Handguard STU5035-SLB. 56 LE Midlength 16in Forged Upper Receiver that's inspected and ready to function right out of the box. Spikes Tactical crafted these AR15 Upper Receivers from 7075 T6... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider Anodized Black. 56 Rifle Length Barrel w/ Pinned FSB and Magpul MOE Rifle Length Handguard Specifications for Aero Precision... ... more

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Black MXM-47813

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Black MXM-47813. R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers or a PDX/SCW compatible... ... more

Aero Precision Complete Upper Receiver M4E1 14.7in 5.56 Mid Pencil Barrel EQ-12 HG Gen 2 Anodized Black APAR640231Q38

Aero Precision Complete Upper Receiver M4E1 14.7in 5.56 Mid Pencil Barrel EQ-12 HG Gen 2 Anodized Black APAR640231Q38. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new... ... more

Spikes Tactical Upper 5.56 16in M4 LE w/MOE BLK SL Handguard STU5025-SLB

Spikes Tactical Upper 5.56 16in M4 LE w/MOE BLK SL Handguard STU5025-SLB. 56 M4 Carbine 16in Forged Upper Receiver right into your current build to create a powerful and reliable firearm for sport shooting self-defense or tactical needs. These AR15... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 10.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 10.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver you... ... more

Aero Precision Complete Upper Receiver M4E1 14.7in 5.56 Mid Pencil Barrel EM-12 HG Gen 2 Anodized Black APAR640231M38

Aero Precision Complete Upper Receiver M4E1 14.7in 5.56 Mid Pencil Barrel EM-12 HG Gen 2 Anodized Black APAR640231M38. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new... ... more

Rainier Arms Rellim Arms AR-15 5.56 Nato Take Down Upper Receiver Assembly Black 16 in RA-TDURA-556-16

Rainier Arms Rellim Arms AR-15 5.56 Nato Take Down Upper Receiver Assembly Black 16 in RA-TDURA-556-16. Utilizing Rellims patented quick detach upper receiver and barrel nut system and Rainiers quality parts its a match made in heaven. Whether you want... ... more

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider Anodized Black

Aero Precision AR-15 Complete Upper Receiver 5.56 Mid-Length 16 inch Barrel w/Pinned FSB Magpul MOE SL Handguard A2 Flash Hider Anodized Black. These AR15 Upper Receivers from the innovators at Aero Precision feature a 5.56 barrel that is chambered for... ... more

SLR 16.5 inch ION Mid M-LOK 5.56 Handguard Black ION16.5ML-MID

SLR 16.5 inch ION Mid M-LOK 5.56 Handguard Black ION16.5ML-MID. 56 Handguard is a sturdy free-floating platform that's built to enhance overall shooter performance and comfort while at the range or in the field. SLR built these AR Handguards & Forends... ... more

SLR 15.5 inch ION Hybrid M-LOK 5.56 Handguard Black ION15.5ML-HYB

SLR 15.5 inch ION Hybrid M-LOK 5.56 Handguard Black ION15.5ML-HYB. 35 inch Internal Diameter. Mil-Spec Hardcoat Anodize. 7075 Barrel nut w/Hardcoat Anodize. Free Floating Design. 4 QD swivel sockets. 7-sided handguard design. MLOK at 3 6 9 o'clock and... ... more

SLR 16 inch HELIX M-LOK 5.56 Handguard w/Full Top Rail Black HELIX16ML-F

SLR 16 inch HELIX M-LOK 5.56 Handguard w/Full Top Rail Black HELIX16ML-F. 35 inch Internal Diameter. SLR's most lightweight handguard design. Mil-Spec Hardcoat Anodize. 7075 Barrel nut w/Hardcoat Anodize. Free Floating Design. 4 QD swivel sockets. MLOK... ... more

SLR 14.87 inch HELIX M-LOK 5.56 Handguard Black HELIX14.87ML

SLR 14.87 inch HELIX M-LOK 5.56 Handguard Black HELIX14.87ML. 56 Handguard. SLR constructed these AR Handguards & Forends from hardcoat anodized aluminum alloy for a lightweight yet durable build and all hardware is complete with a Melonite finish for... ... more

SLR 15.5 inch ION Mid M-LOK 5.56 Handguard Black ION15.5ML-MID

SLR 15.5 inch ION Mid M-LOK 5.56 Handguard Black ION15.5ML-MID. 56 Handguard is a sturdy free-floating platform that's built to enhance overall shooter performance and comfort while at the range or in the field. SLR built these AR Handguards & Forends... ... more

SLR 15.5 inch ION Ultra Lite M-LOK 5.56 Handguard Black ION15.5ML-UL

SLR 15.5 inch ION Ultra Lite M-LOK 5.56 Handguard Black ION15.5ML-UL. 35 inch Inner Diameter. Mil-Spec Hardcoat Anodize. 7075 Barrel nut w/Hardcoat Anodize. Free Floating Design. 4 QD swivel sockets. 7-sided handguard design. MLOK at 3 6 9 o'clock and... ... more

Guntec USA AR-15 5.56 Complete Upper Receiver Combo Kit Black GT-UPPER-KIT

Guntec USA AR-15 5.56 Complete Upper Receiver Combo Kit Black GT-UPPER-KIT. Formulated by using several of the most heavy duty and long lasting substances available these AR15 Upper Receivers from Guntec USA provides you with a product that will give... ... more