Discover the ultimate upgrade for your compact AR-9 pistol build with the Ballistic Advantage 4.5″ 9MM Modern EPC Series AR-15 Barrel 1:10 Twist. Engineered for precision and reliability in close-quarters scenarios, this ultra-short barrel delivers exceptional maneuverability without sacrificing performance. Ideal for defensive applications or range enthusiasts seeking a lightweight, high-quality component, it transforms your AR-15 platform into a versatile powerhouse. Key Features