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My ar9 build - CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit

by Blue-collar, from RI, United States Written on September 19, 2020
Review for CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit
CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit
CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit
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Blue-collar's Review of CMMG, Inc 9mm Barrel and Bolt Carrier Group (BCG) Kit

I pick up this CMMG both barrel kit to build my AR9. I pick the 8 inch barrel. High quality, the Bolt and bolt carrier group is perfect. They have a spring behind the bolt and a round cam pin. It’s a little different but other than that it is perfect. I highly recommend this product
Pros:
  • Bolt carrier group and barrel kit
Cons:
  • None
Best Used for:
  • Building a perfect A.R. 9mm
Would Recommend: Yes
3 of 4 found the following review helpful.
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Last updated 2025-11-12 UTC.