At Coal Creek Armory, we have an indoor pistol range that's open to the public. I've solved a fair number of 1911 feeding problems and slidelock failures (failure to lock slide open on empty mag) by handing the vexed customer one of my Metalform 7rd mags. I often tell them that, if it won't run with my mag, they can keep the mag or throw it in the trash. I still have all 15 of my Metalform mags, and they continue to run 100%.:rock: BTW, I use Metalform part# 45-273, which has a nice locking, removable floor plate, which avoids the problem I've heard of with welded floor plates coming off.