Quote:
Originally Posted by mstarling
From the response so far and from the comments of tp555 on the amount of material removed from the chamber in updating it, one could assume that an existing rifle with a pistol position gas system should be able to run fast pistol powder subsonic loads as it always has and even supersonic loads if built with the same powders previously used with the rifle.
The interesting question is: Can the 220 gr factory subsonic load be used in such a rifle and have it function?
(BTW: My 16" upper runs fine on a registered M16 lower w supersonics. Haven't tried it with subsonics as the Form 4 for the can has not yet cleared.)
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I am more interested in seeing if a under <-- 8" barrel can be made to run with subs "only" in the blackout.
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