Luger mags work perfectly in my 1913 Luger. (((((( When I first tried these mags, they would not work at all. Every empty round would hang up in the breach and/or not load another round into the chamber. Then I tried three different brands of ammo, with the same results. Then I realized the gun was sitting in the closet for several years and the action was a little sticky. After a proper oiling, the mags worked perfectly!!! )))))) BEFORE YOU GIVE THESE MAGS A BAD REVIEW (like i almost did), Make sure your gun is in good working order! I bought two and will probably buy more. These mags are excellent quality.