Here's the thing about that type of device... sure, it'll illuminate whatever you're pointing your weapon at, viewable through your scope, but it'll also be painting a gigantic green laser beam across wherever it is you're hunting. Dunno about you, but if I were a critter and saw something like that, I'd boogie on outta there ASAP. Might be useful for taking a quick shot, but not for scanning for a target... and if you've already got night-vision for that, then really, what's the point?