The One Horse OH 16 5.56 NATO Complete Upper Receiver delivers a straightforward, dependable AR-15 upper built around a 16-inch 5.56 NATO barrel and a 15-inch free-float M-Lok handguard. The nitride...

The DPMS DR-15 Oracle II Slick Side Complete Upper 5.56 NATO 16" M-Lok is a ready-to-run upper assembly built around a 16 inch A2-profile, nitride-finished barrel and a lightweight 13.5 inch M-Lok...

The One Horse 7.5" 300BLK Complete Upper Receiver brings compact .300 AAC Blackout performance to the AR-15 platform in a ready-to-run package. Built around a 7.5" medium-profile barrel with a 1:7...

The One Horse 18" 6mm ARC Rifle 1:7.5 M-LOK Complete Upper transforms a standard AR-15 lower into a precise, flat-shooting platform. Built around an 18-inch 416R stainless steel barrel with a 1:7.5...

The Andro Corp Industries ACI U556103ML 556 10.3" NATO MLOK Upper is a compact AR-15 upper receiver assembly designed around a 10.3 inch 5.56 NATO barrel and a slim M-LOK handguard. This...

The ATI Milsport Complete Upper .300 BLK 8.5" Barrel 7" M-LOK Handguard & Polymer Flip-Up Sights offers a compact, ready-to-mount upper assembly for your AR-15 pattern lower. Built around an 8.5-inch...

The ATI Milsport Complete Upper .300 BLK 16" Barrel 15" M-LOK Handguard & Polymer Flip-Up Sights delivers a ready-to-run upper assembly built around American Tactical’s proven Mil-Sport platform...

The Aero Precision M5 .308 Win Assembled Upper Receiver No Auto Sear Cut For AR-15 Black provides a clean, ready-to-build foundation for your large-frame AR project. Precision machined and finished...

The Andro Corp Industries ACI U5568ML 5.56 8" NATO M-LOK Upper is a compact AR-15 upper receiver assembly designed for shooters who want a short, maneuverable platform built around the proven 5.56...

The TacFire BU-556-11.5 556 Rfl Upper 11.5 W/BCG is a complete AR-15 upper assembly designed for shooters who want a compact 5.56 platform that is ready to pin onto a compatible lower. Built around...

The Andro Corp Industries ACI U30016ML 300BO 16" MLOK Upper is a complete AR-15 upper assembly built around a 16-inch barrel and a slim, free-floating M-LOK handguard. Designed for shooters who want...

The Shark Coast Tactical SCTCU556-8BLK Complete Upper 5.56 8" is a dedicated upper receiver assembly designed for shooters who want a compact, purpose-built AR platform from a trusted builder. This...