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gas ports
well, I got my upper from model 1. I am going to shoot this barrel for awhile then build a sbr with a match barrel.
in the mean time Im going to shoot this with some 240 smk subsonic loads (yes its 1 in 8 twist).
any body have one that cycles with the carbine gas port location? what size did you increase the gas port to?
and what powder?
thanks AZFRED
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