Be careful about the retaining strap not holding the pistol securely in the holster, this is especially the case with heavy long barrelled pistols, since they will often not sit very deep in the holster, meaning all the weight is up near the grip. That's asking for the thing to fall out if the retaining strap is not good and snug and you are running about. I managed to completely break a brand new GBB 1911 pistol (which I'd literally only fired three shots from) by doing that exact same thing; the pistol took a swan dive out of my holster and the beavertail safety broke free, spilling the trigger spring et all out, most of which was never to be seen again, rendering the pistol useless without buying a crapload of spare parts.