I opted for a TLR-1HL. I mounted all the way forward on left on a pistol length handguard. This light is still very bright but not too bright for indoors, it has a very hot and direct beam that can cut very far, we shot at night and were spotting our 8? targets and making hits at about 70 yds. At the same time the light has a good corona around the hotspot that makes for good situational awareness which is how we were able to find those targets in the dark in the first place.
If you are running a light an a suppressor you may really want to opt for a longer handguard too, if you run the shorter handguard with a can, the can will block some of the light and cast a shadow