I had two mecgar mags refitted by GT, he put in wood bottoms and replaced the springs to work with my 1971 Mauser Parabellum because the regular springs caused jams. He also gave me an additional mag for the back and forth with the two magazines

plus he fixed the lips of one of the original mags that came with the gun.
I will be ordering another one soon to keep it loaded in the house just to have my pistol ready as a sidearm next to my shotgun. I don't have a modern pistol but I think it would be good to have a backup gun in case the shotgun fails. I don't want to keep my regular mags loaded because I'm afraid that will weaken the spring over time, but I think I can afford to order a mag from GT every 6 months or so

can't have enough accessories for a gun like that that's not available int he stores anymore
I include some pics of the magazines GT made. You can't see it here but they have a tiny GT stamp on it

Alas I have only a simple camera so they may not be too good but here they come. The last one has my gun in it too