For what is self-labelled as an investigation, there's very little technical information. At the very least (in my limitedly qualified opinion) the main factor should be identified; were all the holsters in the reported incidents leather? The only acknowledgement of the topic is brief.<p>> as it might be in a warped holster or when a finger or object inadvertently brushes the trigger from its side.<p>> He added that accidental discharges can be caused by improper ammunition, worn holsters or foreign objects working their ways into the trigger guards.<p>If this occurred also with plastic holsters, then I'd be concerned. But, unsurprisingly, WP decided to not provide this basic information.<p>If they're all leather, yes. The holster is a critical part of the weapon system. If you're using a leather holster it has a far more limited lifespan than, say, a leather wallet. RTFM.