I'm always going on about buying a good belt and holster, and how the belt and holster are as much a part of the system as the pistol, and how holsters should be rigid and the mouth of the holster shouldn't collapse when the pistol is drawn...
...or else you could come dang close to blowing your own butt cheek off.
Gear is expendable. It will wear out from use. Do not get married to your magazines, your holster, your belt, your pistol, or any other piece of gear. Inspect it frequently and, if worn or defective, repair or replace. This dude's Galco leather holster was wore slap out, and yet he continued to use it, and is lucky he got off as lightly as he did.
(H/T to Sebastian.)