ONE HORSE 5.56 NATO COMPLETE UPPER RECEIVER SOCOM MID-LENGTH FOR AR-15 Upgrade your build with a dependable, ready-to-run 16" 5.56 NATO complete upper receiver engineered for consistent performance, durability, and modular flexibility. Designed for shooters who want a no-hassle solution, this upper arrives fully assembled and ready to mount to any mil-spec AR-15 lower. Built around a 16" barrel with a 1:8 twist, this upper delivers reliable accuracy across a wide variety of ammunition. The 15" free-float M-LOK handguard enhances barrel stability while providing ample space for accessories, giving you the versatility to tailor your setup to y Mfg: One Horse