One Horse LLC OH-CU06 Complete Upper 300 Blackout 7.5" Pistol-Length

The One Horse LLC OH-CU06 is a complete AR-15 upper receiver kit chambered in 300 Blackout, built around a 7.5" barrel. The short 7.5" barrel pairs with a pistol-length gas system, making this configuration well-suited for suppressed or compact SBR/pistol builds where 300 Blackout excels in both supersonic and subsonic applications. Operating system is direct impingement. Specific barrel profile, twist rate, handguard type, and muzzle device details are not confirmed in available supplier data; buyers should verify these specs with the retailer prior to purchase.