CMMG MK9 Bolt Carrier Group 9mm AR-15 Steel Matte



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Compatible With

Delivery Information

Shipping Weight  

1.060 Pounds
Categories: , Product ID: 6710


9mm BCG Overview

Completely assembled Steel AR-15 Bolt Carrier Assembly in 9mm (9mm BCG) in to any AR-15 upper receiver.  Compatible with Glock and Colt style magazines.


bolt carrier group (9mm BCG)

The BCG (bolt carrier group) is the beating heart of any rifle. The revered AR-15 rifle can be easily converted into a 9mm caliber rifle with minimal component changes. One such important component for this change is the 9mm BCG. But simply picking any random BCG doesn’t create a flawless AR.

AR15 BCGs and Bolt Carrier Groups for AR-9 and AR-10 / AR308. The Bolt Carrier Group aka BCG is often called the heart of the rifle, and the best Bolt Carrier Group for your AR-15 is the one that meets your needs perfectly. This is why AR-15 Discounts is proud to offer a constantly growing selection of AR-15 Bolt Carrier Groups from the best BCG manufacturers in the world.


Top 15 #1 JP Enterprises EnhancedBolt Bolt Carrier Group Kit View on OpticsPlanet Specification #2 Angstadt Arms Bolt Carrier Group View on OpticsPlanet Specification #3 Faxon Firearms Gen Bolt Carrier Group View on OpticsPlanet Specification #4 Spikes Tactical Enhanced ST9BG01 Finish View on OpticsPlanet Specification.

Angstadt Arms

Angstadt Arms, AR-15 Bolt Carrier Group, 9MM, Black Finish, Compatible For Use with Both Glock and Colt Style Dedicated 9mm AR-15 Lower Receivers MUST BE 21 TO PURCHASE THIS ITEM! This 9mm bolt carrier group is compatible with both GLOCK and Colt style 9mm AR-15 magazines without any further modifications.

Delivery Information

Shipping Weight 

1.060 Pounds





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