Milspec Posted July 5, 2020 Share Posted July 5, 2020 I'm just trying to clarify. When people talk about 2 port/4 port this is in reference to the gas ports in relation to the the pistons correct? We're not talking about actual conventional porting which mitigates recoil/muzzle rise. I searched for barrel picks to compare the two but I couldn't find anything on the interwebs. Quote Link to comment Share on other sites More sharing options...
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