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FailZero AR15 Bolt Carrier Group (BCG) w/ Hammer
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Mike Inmichigan's Review of FailZero AR15 Bolt Carrier Group (BCG) w/ Hammer

This is a semi bolt. I used it in my RRA LAR ar15 which has a very nice full BCG. This bolt, as it should, has less felt recoil and seems a bit faster. I didn't use the hammer as the RRA came with a pretty good 2 stage. Where this bolt shines (pun intended) is maintenance. Clean up is a perverbeal snap. Most all of it (after 400 flawless rounds) whipped off. Some scraping here and there.
Would Recommend: Yes
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Last updated 2025-11-12 UTC.