This is a well made flashlight. It is great as a handheld flashlight but if you want to use it as a weapons light (mounted on a quad rail)you need to buy the Click-On Lock-Out Tailcap for $46.99, and a GG&G flashlight mounting ring for $19.99.
Pros: It is well made.
Cons: It does not have Click-On Lock-Out Tailcap
This review was written in the old system and had content requirements that are different than reviews written today.