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Does anyone have recommendations as far as buffer weight for a suppressed 7" BCM 300 blackout sbr? — 1 Answer

by Dennis, from AZ, United States Asked on November 18, 2022

Name Maxim Defense Industries CQB Stock Gen 7 for AR-15 (4.1)
As Low As $341.96 Save Up to 19%
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Answered by Ethan, Gear Expert, from IL, United States, on November 23, 2022

Because your AR is chambered in 300 Blackout and using a suppressor, you will need to use at least an H3 buffer to ensure proper functionality and reliability. You can learn more about the correct buffer weight for your build by reading the How to Guide linked below:
https://www.opticsplanet.com/howto/how-to-select-buffer-tubes.html

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Last updated 2025-11-12 UTC.