Cobalt Kinetics presents the CK-Pro Receiver Set 11.8" Black, a masterpiece of engineering and design. This premium AR upgrade kit features a proprietary non-rotating upper receiver system, ensuring a rock-solid handguard mount with 8 TORX screws. Id…

Cobalt Kinetics presents the CK-Pro Receiver Set, a masterpiece of engineering and design. Crafted with precision, this set features a proprietary upper receiver extension that secures the handguard with 8 TORX head screws, ensuring a non-rotating sy…

Cobalt Kinetics presents the CK-Pro Receiver Set 16" Black, a masterpiece of engineering and design. This premium AR upgrade kit boasts a proprietary non-rotating upper receiver system with 8 TORX screws for a rock-solid handguard mount, ensuring...

The Radical Firearms 10.5" HBAR profile 300BLK is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Built with precision engineering, it features a 10" RPR free float rail system for increased accuracy and keeping your hands cool.…

The LMT Defense MRP-L Quad 13.25 Upper is a marvel of engineering, crafted from a single piece of aerospace-grade aluminum. This monolithic rail platform integrates the handguard and receiver into one seamless component, offering unmatched functional…

The Aero Precision M4E1 Superlative Arms Piston Complete Upper Receiver Group is a testament to superior design and engineering. This upper receiver is crafted with precision, featuring a 16-inch barrel and a 15-inch handguard, all finished in a slee…

Aero Precision's EPC-9 9/40 Threaded Assembled Upper Receiver w/LRBHO is a testament to engineering excellence, crafted from custom forged 7075-T6 aluminum with an anodized black finish. This upper receiver is designed for seamless integration with A…

Aero Precision presents the 5.56MM Assembled Upper Receiver No Auto Sear Cut for AR-15 FDE, crafted with precision engineering and high-quality materials. This upper receiver is designed for seamless integration with AR-15 platforms, featuring a dura…

The Brownells MK18 Block II Tribute Bundle is a testament to superior design and engineering, featuring a Daniel Defense MK18 SOCOM Upper Receiver, a B5 Buttstock, and an Eotech EXPS3 Holographic Sight. This bundle is crafted for reliability and ease…

The Brownells BRN-180 GEN 2 Upper Receiver, chambered in .223 Wylde with a 16'' barrel, showcases superior engineering and design quality. This upper receiver features a short-stroke gas piston operating system, ensuring ultra-reliability and...

Aero Precision presents the AR-15 Stripped Upper Receiver No Auto Sear Cut, engineered with precision and crafted from high-quality aircraft aluminum. This receiver boasts a black anodized finish and M4 feedramps, ensuring smooth operation and...

The Colt M4 LE6921 Upper Group 14.5in Stripped is engineered for precision and reliability, featuring a robust anodized finish and a 1/2-28 muzzle. This AR-15 upper receiver group is designed for seamless integration with your existing setup, offerin…