The Promag 18 Round Mag For Glock 44 22LR is an aftermarket high capacity mag for the Glock 44 which is a Glock 19 clone.
ProMag has a lifetime warranty! If you have issues with your mags please contact them directly for warranty replacement. We will refund unopened magazines per our normal return policy. If you wish to test them we advise only ordering 1 magazine.