One Horse Complete Upper Receiver 300 Blackout 7.5" Barrel 7" M-LOK

Master close-quarters performance with this ultra-compact 7.5a ^2 .300 Blackout Complete Upper Receiver. Featuring a 7.5a ^2 barrel with a 1:7 twist rate, this upper ensures optimal stabilization for both subsonic and supersonic rounds, making it perfect for tactical, suppressed, or AR15 pistol builds. The 7a ^2 M-Lok handguard provides a lightweight, modular platform for mounting accessories, while the nitride-finished bolt carrier group delivers smooth cycling, enhanced durability, and low maintenance. Complete with a charging handle and built to Mil-Spec standards, this upper is ready to pair with any AR15 Mil-Spec lower receiver for a seamless, high-performance setup.