Cut this picture out of local paper some years back. Pretty used to scoped M16s in Iraq, but I can't identify two scopes in this picture. One, the middle is obviously an ACOG. and one on far right is an AimPoint. But the left and Third scoped rifles apear to have an adj ring at the back - like on an ART I or ART II. The rifle on the left appears to have a rubber eyepiece from something like a PSL added. Any ideas?