Yep. Read that right. I was bored and going through my "junk" box. Had one odd ball scope ring that I found laying next to this flashlight. So I said to my self..."Self..I bet that light will fit in that ring". Sure as heck it did! So I stuck it on the side of my AR. It'll do until I get a viridian X5l for it! Bought the light a few weeks back for just under $15 bucks. about 120 - 150 lumens.