it really depends on three things 1# gasport size #ammunition/caliber if you're running 556 you're going to want to run probably H2~H3 maybe even heavier, if 300 blackout a carbine~h buffer 3, then is your suppressor high medium or low back pressure
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by Jay, from CA, United States Asked on July 1, 2026
it really depends on three things 1# gasport size #ammunition/caliber if you're running 556 you're going to want to run probably H2~H3 maybe even heavier, if 300 blackout a carbine~h buffer 3, then is your suppressor high medium or low back pressure