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Reviews & Ratings for FM Products 9mm Bolt Carrier and Heavy Buffer — 5 reviews

(5 reviews)
FM Products 9mm Bolt Carrier and Heavy Buffer
FM Products 9mm Bolt Carrier and Heavy Buffer
$135.00 $118.99 Save 12%
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Most Helpful Positive Review Just the BCG out of stock? No problem!
I was pleasantly surprised to see that when I could not get just the FM9 BCG, I was able to, for the same price, get the same BCG but WITH a solid steel buffer and 308 flat wound spring, made for AR9 builds. I've built several AR9's over the years and all but one was with the FM9. They run smooth, s...
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Most Helpful Negative Review Works good but
Bcg had same issue as another review where spring pin wasn't flush and was mushroomed. Didn't affect function. Cycles fine with endomag without scraping mag. 308 spring had issue with charging and clearance. Very hard to pull charging handle. Used buffer and regular AR-15 spring and no issues at...
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Great product. Great price.

by Sparky Jake ZR1, Verified Owner from UT, United States Written on September 16, 2026
Found this product after searching and I have received it and it’s installed. I’m very impressed with it. Good quality and functions very well.
Would recommend: Yes
Was it helpful to you? Yes | No
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FM9 BCG Compatibility

by Brad, Verified Owner from KY, United States Written on February 28, 2026
Its a high quality bolt that will function with a Partisan trigger or AS Design Arc Fire, however.
It fit my Aero Precision upper but will not clear the ejector on my Springfield St Victor.
Would recommend: Yes
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9mm BCG with heavy buffer weight and buffer spring

by Varmint Assassin, Verified Owner from MS, United States Written on October 15, 2024
Great value and good quality parts with a fast turnaround. I will order again.
Would recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.