AT3 Tactical AR-9 Barrel - 4.5 - 9MM - Straight Profile - 1/2x28 Thread

Precision Pistol Caliber Performance in a Compact Package Bring the versatility of 9mm to your AR build with this straight profile 4.5 barrel from AT3(TM). Crafted from premium 4150 CrMoV steel per MIL-B-11595E specs and protected by a rugged black nitride finish. The straight profile adds a balanced weight while maintaining accuracy with 9mm ammunition. [...]