I used the light for about a year on patrol with no sustained heavy use. Its a good weapon light but I recently attended a pistol school where I shot about 1000 rounds of 9mm over a few days from a Glock 17. The switch broke on the light during the last day. I could not turn the light off. It looks like one of the switch terminals broke off. Maybe a design flaw or wear after heavy use.
Pros: Good Features, Bright Light
Cons: Switch breaks under heavy use
This review was written in the old system and had content requirements that are different than reviews written today.