I like mine - got it through IRG before the dollar tanked. The optic's been moved around on several guns, most recently on my Tavor before I got my second OS4, and has worked well on all. Not too heavy, decent glass, and (so far) reliable. I currently have it on an XCR-L. I pulled off the Fastfire, as I didn't really see the point of a red dot on a 1-4 optic.