Flashbanggoodbye Posted June 26, 2020 Report Posted June 26, 2020 What is the difference between a m4 and m5 barrel extension, and does bolt need to match?
98Z5V Posted June 26, 2020 Report Posted June 26, 2020 What are you talking about? M4 feedramps? M5, as in Aero Precision? If it's what I think you're talking about, it's mainly diameter. AR15 barrel extensions, and .308AR barrel extensions.
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