Out of the 4 brands of holsters I've used over the past 2-3 years my two Teir 1s are the only brand that do not constantly turn on my tlr7 (original model with side buttons, not the better designed tlr7a). I believe this speaks to the tolerances of their design. My T1 Axis Slim appendix holster is nearly cracked in half where all holsters eventually seem to fail, directly behind the trigher guard. Materials can only handle so much, I dont blame it at all on the design and I've gotten my moneys worth out of it. Ill be ordering the exact same replacement soon.