Originally Posted by Tex
all my KSC mags do that glock 19 and 17
however im having issues with my two g19 mags when filling them fully with BB-s. after the first or two shots it stops feeding bb-s, because the spring has somehow been pushed back to the locked "filling position". havent figured that one out yet. now im just filling it with 17 bb-s and bypassing the problem.