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| Best Seller  | 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 | FREE shipping go to store |
 | Stag Arms AR-15 Retro Right Hand Upper Receiver 5.56 NATO 20in Barrel GOV Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101011. Made to mil-spec standards with a removable A3 carry handle and a rifle length thermoplastic... ... more | FREE shipping go to store |
| Best Seller  | Stag 15 5.56 16in Tactical Nitride Upper Receivers - Stag 15 Tactical Nitride Upper $55 off $500+. Use code SEPT55Looking to take your AR-15 to the next level? Maybe you have a dedicated upper receiver designed for a particular task, and you're looking to open up your rifle's capabilities? This Stag Arms Stag-15 Tactical Upper Receiver is an easy swap for your... ... more
Stag 15 5.56 16in Tactical Nitride Upper Receivers - Stag 15 Tactical Nitride Upper Looking to take your AR-15 to the next level? Maybe you have a dedicated upper receiver designed for a particular task, and you're looking to open up your rifle's capabilities? This Stag Arms Stag-15 Tactical Upper Receiver is an easy swap for your... | go to store |
 | 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 | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 10.5 in RA-RUC-PRO-MK2-105-PU Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 10.5 in RA-RUC-PRO-MK2-105-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 | FREE shipping go to store |
 | Stag Arms AR-15 3-Gun Elite Left HandUpper Receiver 5.56 NATO 18in Barrel Heavy-Fluted Profile 1-8 Twist VG6 Gamma Black STAG15110611. Specifications for Stag Arms AR-15 3-Gun Elite Right HandUpper Receiver: Manufacturer: Stag Arms Color: Black Finish:... ... more | FREE shipping go to store |
 | Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 7.5in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Chromephos FDE. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more | FREE shipping go to store |
 | Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 10.5in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta FDE STAG15101722. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics... ... more | FREE shipping go to store |
 | Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 7.5in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride FDE STAG15101922. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights... ... more | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | Rainier Arms Rellim Arms AR-15 .223 Wylde Take Down Upper Receiver Assembly Black 8.5 in RA-TDURA-223-8-5. Utilizing Rellims patented quick detach upper receiver and barrel nut system and Rainiers quality parts its a match made in heaven. Whether you... ... more | FREE shipping go to store |
 | Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 10.5 in RA-MK1-10.5-PU-BLK Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 10.5 in RA-MK1-10.5-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 | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | Stag Arms AR-15 Tactical Left Hand Upper Receiver 5.56 NATO 16in Barrel Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride Black STAG15110142. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights... ... more | FREE shipping go to store |
 | Stag Arms AR-15 Upper Left Hand Receiver 5.56 NATO 16in Barrel NJ Compliant M4 Profile1-7 Twist 1/2 x 28 Thread Compensator Black STAG15111113. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more | FREE shipping go to store |
 | Rainier Arms Rellim Arms AR-15 300Blk Take Down Barrel Assembly Black 8 in RA-TDBA-300-8 Rainier Arms Rellim Arms AR-15 300Blk Take Down Barrel Assembly Black 8 in RA-TDBA-300-8. The barrel assembly is a proprietary part to the Take Down Upper assembly. Specifications for Rainier Arms Rellim Arms AR-15 300Blk Take Down Barrel Assembly:... ... more | FREE shipping go to store |
 | Stag Arms AR-15 3-Gun Elite Right HandUpper Receiver 5.56 NATO 18in Barrel NJ Compliant Heavy-Fluted Profile 1-8 Twist VG6 Gamma Black STAG15100613. Specifications for Stag Arms AR-15 3-Gun Elite Right HandUpper Receiver: Manufacturer: Stag Arms Color:... ... more | FREE shipping go to store |
 | Stag Arms AR-15 3-Gun Elite Left HandUpper Receiver 5.56 NATO 18in Barrel NJ Compliant Heavy-Fluted Profile 1-8 Twist VG6 Gamma Black STAG15110613. . Developed working with several of the most robust and dependable resources in existence these AR15... ... more | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | Rainier Arms RUC DI 5.56 Nato Partial Upper Receiver Black 14.5 in RA-RUC-DI-14M-PU Rainier Arms RUC DI 5.56 Nato Partial Upper Receiver Black 14.5 in RA-RUC-DI-14M-PU. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a direct impingement operating system on their new... ... more | FREE shipping go to store |
 | Rainier Arms RUC DI 5.56 Nato Partial Upper Receiver Black 10.5 in RA-RUC-DI-10C-PU Rainier Arms RUC DI 5.56 Nato Partial Upper Receiver Black 10.5 in RA-RUC-DI-10C-PU. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a direct impingement operating system on their new... ... more | FREE shipping go to store |
 | Rainier Arms RUC DI 5.56 NATO Partial Upper Receiver 16in Black Medium RA-RUC-DI-16M-PU Rainier Arms RUC DI 5.56 NATO Partial Upper Receiver 16in Black Medium RA-RUC-DI-16M-PU. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a direct impingement operating system on their... ... more | FREE shipping go to store |
 | Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver Assembly No Bcg No Ch WH-UR-16-556 Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver Assembly No Bcg No Ch WH-UR-16-556. 56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low-profile Muzzle Device: A2 Flash Hider Receiver Material:... ... more | FREE shipping go to store |
 | Rainier Arms RUC DI 5.56 NATO Complete Upper 16in Black Medium RA-RUC-DI-16M-CU Rainier Arms RUC DI 5.56 NATO Complete Upper 16in Black Medium RA-RUC-DI-16M-CU. Bringing the highest quality parts to the market while offering the best value as well. This complete upper utilizes a direct impingement operating system on their new and... ... more | FREE shipping go to store |
 | Rainier Arms Select 5.56 NATO Barrel 16in 1-7 Twist 1/2x28 Black Medium RAB-SEL-556-16-M-NF-BLK Rainier Arms Select 5.56 NATO Barrel 16in 1-7 Twist 1/2x28 Black Medium RAB-SEL-556-16-M-NF-BLK. They are able to reach our goal by sourcing a very high end barrel blank at an affordable price. They start off using a high precision match blank in 1:7... ... more | FREE shipping go to store |
 | 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 | FREE shipping go to store |
 | Battle Arms Development Workhorse 10.5in 5.56 Nato Upper Receiver Assembly No Bcg No Ch WH-UR-10.5-556. 5-556 Barcode: 810033783784 Barrel Length: 10.5in Gas System: Carbine Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish:... ... more | FREE shipping go to store |
 | Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 7.5in Black 556N75ULCUA Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 7.5in Black 556N75ULCUA. This AR-15 complete upper assembly is built around the 7075-T6 billet upper receiver specifically machined and cut in areas where excess material was unnecessary... ... more | FREE shipping go to store |
 | Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 13in Black 556N13ULCUA Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 13in Black 556N13ULCUA. This AR-15 complete upper assembly is built around the 7075-T6 billet upper receiver specifically machined and cut in areas where excess material was unnecessary... ... more | FREE shipping go to store |
 | Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 16in Black 556N16ULCUA Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 16in Black 556N16ULCUA. This AR-15 complete upper assembly is built around the 7075-T6 billet upper receiver specifically machined and cut in areas where excess material was unnecessary... ... more | FREE shipping go to store |
 | Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 10.5in Black 556N105ULCUA Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 10.5in Black 556N105ULCUA. This AR-15 complete upper assembly is built around the 7075-T6 billet upper receiver specifically machined and cut in areas where excess material was... ... more | FREE shipping go to store |
 | Rainier Arms Mountain MOD2 5.56 NATO Barrel 16in 1/2x28 Mid Len Black Medium RAB-CMV-556-16-M-HF-BLK Rainier Arms Mountain MOD2 5.56 NATO Barrel 16in 1/2x28 Mid Len Black Medium RAB-CMV-556-16-M-HF-BLK. We have brought back our Mountain Series of barrels for those of you who want the accuracy you expect from Rainier Arms in a nearly indestructible... ... more | FREE shipping go to store |
 | Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 7.5in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride Black. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more | FREE shipping go to store |
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