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enlarge gas port...?
Currently, my M1S 16" Whisper doesn't fully cycle. It will extract but not strip the next round from the mag. I swapped out the rifle length buffer spring (I use an A2 stock) for a carbine length spring, but to no avail. Got me thinking I'm not getting enough gas in the action, so why not try and enlarge the gas port a little in an effort to get that gas? So, with that in mind, what numerical size is the OEM port, and what would be the reccomendation to go up to?
BTW, I know some have mad e a fix by using a carbine length buffer, but I don't like the idea as it lets the carrier travel too far back in the extension tube.
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