Rifleing on a G21 vs G30? [Archive] - Glock Talk Glock Talk > Go Ask The Expert Forums > GATE Glock Pistol Forum > Rifleing on a G21 vs G30? PDA View Full Version : Rifleing on a G21 vs G30? Raydon300009-08-2010, 11:02Is the rifleing in the barrel of a G21 the same as the rifleing of a G30 barrel? JR09-08-2010, 15:26All the 45's are the same. vBulletin® v3.8.7, Copyright ©2000-2013, vBulletin Solutions, Inc.