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 Colt pattern bolt comes in at 14.8 ounces, providing the correct weight needed to tame your blow back system.

Compatible with both Colt and Glock pattern builds.

This BCG works great with any Colt style 9mm rifle and Colt pattern magazines. We highly recommend ASC mags, which you may purchase here.
 

• Colt & Glock Compatible
• USA made 8620 Steel Carrier Construction
• Phosphated or Nitrided Finish
• Heavy Firing Pin Retaining Spring
• 14.8 oz.

DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.