Rainier Arms Gen 2 Forged A4 Upper Receiver AR-15 Black RA-A4-UR-G2

Aero Precision Ar-15/M16 Assembled Upper Receiver - 5.56x45 Nato Assembled Upper Receiver For Ar-15

The AR-15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and features M4 feedramps. Black model... ... more

Foxtrot Mike Products Ar-15 Mike-15 Gen 2 Upper Receiver Assembly 223 Wylde - Ar-15 16" Upper Receiv

The Mike-15 Upper Receiver incorporates several novel and patent pending ideas into one of the most innovated AR-15 uppers on the market. The integrated, proprietary recoil system allows for the upper to function without the need for a lower with a... ... more

Grey Ghost Precision Ar-15 Forged Upper Receiver - Ar-15 Stripped Forged Upper Receiver Black

Cornerstone Lower fans have been asking for years now; "Does GGP make a forged upper with the same gorgeous anodizing and tight fit as their lower?" Ask and ye shall receive! Finally, you can grab what Grey Ghost Precision considers the best forged... ... more

Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Black RA-TDURA-COMBO

Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Black RA-TDURA-COMBO. 5" .223 Wylde configuration into a 8" 300BLK configurations in a matter of seconds. Specifications for Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver... ... more

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Gamma Black STAG15100144

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Gamma Black STAG15100144. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more

Stag Arms AR-15 Pursuit Left Hand Upper Receiver .350 Legend 18in Barrel Hanson Profile 1-16 Twist 1/2-28 Thread VG6 Gamma Black STAG15113502

Stag Arms AR-15 Pursuit Left Hand Upper Receiver .350 Legend 18in Barrel Hanson Profile 1-16 Twist 1/2-28 Thread VG6 Gamma Black STAG15113502. Specifications for Stag Arms AR-15 Pursuit Left Hand Upper Receiver: Manufacturer: Stag Arms Color: Black... ... more

Stag Arms AR-15 3-Gun Right Hand Upper Receiver 223 WYLDE 16in Barrel Hanson Profile 1-8 Twist 1/2-28 Thread VG6 Gamma Black STAG15103202

Stag Arms AR-15 3-Gun Right Hand Upper Receiver 223 WYLDE 16in Barrel Hanson Profile 1-8 Twist 1/2-28 Thread VG6 Gamma Black STAG15103202. Specifications for Stag Arms AR-15 3-Gun Right Hand Upper Receiver: Manufacturer: Stag Arms Color: Black Finish:... ... more

Stag Arms AR-15 Pursuit Left Hand Upper Receiver .350 Legend 16in Barrel Hanson Profile 1-16 Twist 1/2-28 Thread VG6 Gamma Black STAG15113512

Stag Arms AR-15 Pursuit Left Hand Upper Receiver .350 Legend 16in Barrel Hanson Profile 1-16 Twist 1/2-28 Thread VG6 Gamma Black STAG15113512. Specifications for Stag Arms AR-15 Pursuit Left Hand Upper Receiver: Manufacturer: Stag Arms Color: Black... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel M4 Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101111

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel M4 Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101111. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

Stag Arms AR-15 Upper Left Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black

Stag Arms AR-15 Upper Left Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a... ... more

Stag Arms AR-15 Pursuit Right Hand Upper Receiver .350 Legend 16in Barrel Hanson Profile 1-16 Twist 1/2-28 Thread VG6 Gamma Black STAG15103512

Stag Arms AR-15 Pursuit Right Hand Upper Receiver .350 Legend 16in Barrel Hanson Profile 1-16 Twist 1/2-28 Thread VG6 Gamma Black STAG15103512. Specifications for Stag Arms AR-15 Pursuit Right Hand Upper Receiver: Manufacturer: Stag Arms Color: Black... ... 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

Stag Arms AR-15 Super Varminter Right Hand Upper Receiver 6.8 SPC 20.77in Barrel BULL Profile 1-11 Twist Black STAG15100811

Stag Arms AR-15 Super Varminter Right Hand Upper Receiver 6.8 SPC 20.77in Barrel BULL Profile 1-11 Twist Black STAG15100811. 8 SPC II) was specifically designed for game hunters. Specifications for Stag Arms AR-15 Super Varminter Right Hand Upper... ... more

Stag Arms AR-15 Covenant Left Hand Upper Receiver 6mm 16in Barrel BULL Profile 1-7 Twist 5/8-24 Thread VG6 Gamma Black STAG15112201

Stag Arms AR-15 Covenant Left Hand Upper Receiver 6mm 16in Barrel BULL Profile 1-7 Twist 5/8-24 Thread VG6 Gamma Black STAG15112201. Designed to be the ideal round for match shooting hunting and personal protection. To prevent any confusion the... ... more

Alexander Arms Tactical Upper Receiver AR-15 6.5mm Grendel 18 inch Barrel 1-8 Twist 5/8x24 Thread A2 Flash Hider Black Anodized UTA-65-10RD

Alexander Arms Tactical Upper Receiver AR-15 6.5mm Grendel 18 inch Barrel 1-8 Twist 5/8x24 Thread A2 Flash Hider Black Anodized UTA-65-10RD. Specifications for Alexander Arms AR-15 6.5mm Grendel Tactical Upper Receiver: Manufacturer: Alexander Arms... ... more

FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver 22.25 inch 12.5 inch Barrel Mid Length 1-8 Twist 1/2x28 Thread Free-Float Nitride Black

FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver 22.25 inch 12.5 inch Barrel Mid Length 1-8 Twist 1/2x28 Thread Free-Float Nitride Black. Specifications for FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver: Manufacturer: FM... ... more

FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver 24.75 inch 16 inch Barrel Intermediate 1-8 Twist 1/2x28 Thread Free-Float Nitride Black

FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver 24.75 inch 16 inch Barrel Intermediate 1-8 Twist 1/2x28 Thread Free-Float Nitride Black. Specifications for FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver: Manufacturer: FM... ... more

Rock River Arms Completed Upper Receiver A4 9MM Luger 16 Inch Barrel 1-10 Twist 1/2-36 Thread Free-Float Handguard Brake Black 9MM0700.V1

Rock River Arms Completed Upper Receiver A4 9MM Luger 16 Inch Barrel 1-10 Twist 1/2-36 Thread Free-Float Handguard Brake Black 9MM0700.V1. . Formulated working with several of the very most robust and dependable materials available these AR15 Upper... ... more

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 11.5 in RA-MK1-11.5-PU-BLK

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 11.5 in RA-MK1-11.5-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

Stag Arms AR-15 Covenant Right Hand Upper Receiver 6mm 18in Barrel BULL Profile 1-7 Twist 5/8-24 Thread VG6 Gamma Black STAG15102301

Stag Arms AR-15 Covenant Right Hand Upper Receiver 6mm 18in Barrel BULL Profile 1-7 Twist 5/8-24 Thread VG6 Gamma Black STAG15102301. Designed to be the ideal round for match shooting hunting and personal protection. To prevent any confusion the... ... more

Stag Arms AR-15 Covenant Left Hand Upper Receiver 6mm 18in Barrel BULL Profile 1-7 Twist 5/8-24 Thread VG6 Gamma Black STAG15112301

Stag Arms AR-15 Covenant Left Hand Upper Receiver 6mm 18in Barrel BULL Profile 1-7 Twist 5/8-24 Thread VG6 Gamma Black STAG15112301. Designed to be the ideal round for match shooting hunting and personal protection. To prevent any confusion the... ... more

Rock River Arms Upper Receiver A4 .223 Wylde 24 Inch Barrel Varmint Profile 1-12 Twist Free-Float Handguard Black AR0576

Rock River Arms Upper Receiver A4 .223 Wylde 24 Inch Barrel Varmint Profile 1-12 Twist Free-Float Handguard Black AR0576. 223 Wylde Completed Upper was created to be the ideally suited product for anybody looking for an outstanding option.. These AR15... ... more

Angstadt Arms Complete Upper Assembly AR-15 10 in Handguard 10.5 in Barrel A2 Flash Hider Picatinny/M-LOK 1/2x36 Black AAUT009105

Angstadt Arms Complete Upper Assembly AR-15 10 in Handguard 10.5 in Barrel A2 Flash Hider Picatinny/M-LOK 1/2x36 Black AAUT009105. Ready to run with any 9MM AR-15 dedicated lower receiver. Specifications for Angstadt Arms AR-15 Complete 9mm Upper... ... more

Rainier Arms MK12 223 Wylde Partial Upper Receiver Black 18 in RA-MK12-DI-18R-PU

Rainier Arms MK12 223 Wylde Partial Upper Receiver Black 18 in RA-MK12-DI-18R-PU. Bringing the highest quality parts to the market while offering the best value as well. This partial upper build utilizes a Precision Reflex GEN III free float handguard... ... more

Rock River Arms Completed Upper Receiver Entry Tactical A4 .223/5.56mm 16 Inch Barrel 1-9 Twist 1/2-28 Thread R4 Handguard A2 Flash Hider Black

Rock River Arms Completed Upper Receiver Entry Tactical A4 .223/5.56mm 16 Inch Barrel 1-9 Twist 1/2-28 Thread R4 Handguard A2 Flash Hider Black. 223/5.56mm Completed Upper. These AR15 Upper Receivers from the expert product specialists at Rock River... ... more

Stag Arms AR-15 Retro Left Hand Upper Receiver 5.56 NATO 20in Barrel NJ Compliant GOV Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15111013

Stag Arms AR-15 Retro Left Hand Upper Receiver 5.56 NATO 20in Barrel NJ Compliant GOV Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15111013. Made to mil-spec standards with a removable A3 carry handle and a rifle length thermoplastic... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

Wilson Combat Upper Receiver 5.56x45mm NATO AR-15 Forged Anodized Black TR-UPPER-A

Wilson Combat Upper Receiver 5.56x45mm NATO AR-15 Forged Anodized Black TR-UPPER-A. These AR15 Upper Receivers have been machined for maximum durability and given a hard coat anodized in rugged black. The Wilson Combat Upper Receiver is a must have for... ... more

Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 11.5 in RA-RUC-PRO-MK1-RS-115-PU

Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 11.5 in RA-RUC-PRO-MK1-RS-115-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... ... more

Rock River Arms Completed Upper Receiver National Match A4 .223/5.56mm 20 Inch Barrel 1-8 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider

Rock River Arms Completed Upper Receiver National Match A4 .223/5.56mm 20 Inch Barrel 1-8 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider. 223 Wylde Completed Upper then you've found yourself in the absolute right spot.. These AR15 Upper... ... more

Rock River Arms Completed Upper Receiver National Match A4 .223/5.56mm 20 Inch Barrel 1-8 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider

Rock River Arms Completed Upper Receiver National Match A4 .223/5.56mm 20 Inch Barrel 1-8 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider. 223 Wylde Completed Upper then you've found yourself in the absolute right spot.. These AR15 Upper... ... more

Rock River Arms Completed Upper Receiver National Match A4 .223/5.56mm 20 Inch Barrel Competition Profile 1-8 Twist 1/2-28 Thread Free-Float Handguard

Rock River Arms Completed Upper Receiver National Match A4 .223/5.56mm 20 Inch Barrel Competition Profile 1-8 Twist 1/2-28 Thread Free-Float Handguard. 223 Wylde Completed Upper then you've come to the ideal spot.. These AR15 Upper Receivers through... ... more

Rock River Arms Completed Upper Receiver National Match A4 Competition Trainer .22 Long Rifle 20 Inch Barrel 1-16 Twist 1/2-28 Thread Free-Float

Rock River Arms Completed Upper Receiver National Match A4 Competition Trainer .22 Long Rifle 20 Inch Barrel 1-16 Twist 1/2-28 Thread Free-Float. 22 Long Rifle Completed Upper. These AR15 Upper Receivers through the skilled product specialists at Rock... ... more

Rock River Arms Completed Upper Receiver Predator HP A4 .308/7.62X51mm NATO 16 Inch Barrel 1-10 Twist Free-Float Handguard Brake Black 308A0578

Rock River Arms Completed Upper Receiver Predator HP A4 .308/7.62X51mm NATO 16 Inch Barrel 1-10 Twist Free-Float Handguard Brake Black 308A0578. 308/7.62X51mm NATO Completed Upper. Formulated by using several of the most robust and long lasting... ... more

Rock River Arms Completed Upper Receiver A4 .450 Bushmaster 16 Inch Barrel 1-24 Twist 5/8-32 Thread Free-Float Handguard Brake Black 450B0592

Rock River Arms Completed Upper Receiver A4 .450 Bushmaster 16 Inch Barrel 1-24 Twist 5/8-32 Thread Free-Float Handguard Brake Black 450B0592. 450 Bushmaster Completed Upper then you have come to the right spot.. Established working with several of the... ... more

Rock River Arms Completed Upper Receiver A4 .450 Bushmaster 20 Inch Barrel 1-24 Twist 5/8-32 Thread Free-Float Handguard Brake Black 450B0587

Rock River Arms Completed Upper Receiver A4 .450 Bushmaster 20 Inch Barrel 1-24 Twist 5/8-32 Thread Free-Float Handguard Brake Black 450B0587. 450 Bushmaster Completed Upper then you have come to the right spot.. Established working with several of the... ... 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