For indoor use, this is the best light for a carbine or shotgun. The light has a very wide spill so you can see every corner of the room. It's also bright enough at 200 lumens but not too bright that you distract yourself. It's extremely easy to mount and it is so lightweight that you won't even notice that it's there.
Pros: Light weight, very bright
Cons: Plastic exterior
This review was written in the old system and had content requirements that are different than reviews written today.