How fast can you push an 18.1gr JSB and still get a full 30 shots on the factory reg?
MP44 Member Apr 3, 2015 1,032 126 VA, United States Jun 1, 2016 Add bookmark #1 Jun 1, 2016 Add bookmark #1 How fast can you push an 18.1gr JSB and still get a full 30 shots on the factory reg?
