One Horse OH-CU01 Complete Upper 5.56 NATO 16"

The One Horse OH-CU01 is a complete AR-15 upper receiver assembly chambered in 5.56 NATO, built around a 16" barrel. The upper receiver is machined to mil-spec standards and ships as a complete unit ready to mate with any standard AR-15 lower receiver. Specific barrel profile, twist rate, and gas system length are not confirmed in supplier data, though a 16" barrel typically pairs with a mid-length or carbine-length gas system operating via direct impingement. Handguard type and muzzle device details are not specified in available source data. BCG and charging handle inclusion status should be verified prior to listing.