... manufacturing small firearms having a bore 30 mm. (or 1.18 inch) or less, and parts for small firearms. Also ... Magazines, gun: 30 mm. ( or 1.18 inch) or less ...
... mm machine gun, M134 Minigun, M197 20 mm three barreled cannon, XM188 30 mm three ... of depression, and feeds from an ammunition magazine with 1,200 rounds.[113] ...
Quote Reply Posted: October/09/2004 at 18:22. 30mm is the better of the two. ... A 30 mm tube allows for more adjustment in the erectors of a variable scope. ...