This 9mm BCG is perfect for your 9mm Pistol Caliber AR-15 Build. Due to the increased rearward velocity, blowback AR systems require a heavier carrier. This AR9 BCG comes in at 14.8 ounces, providing the correct weight needed to tame your blow back system.
Features:
USA made 8620 Steel Carrier Construction
Phosphated or Nitrided Finish
Heavy Firing Pin Retaining Spring
14.8 oz.