Great idea, horrible execution. - Trijicon TA03 ACOG Sight Adapter for H&K Rifles

Mount would not fit on a PTR-91. I fully torqued the mounting screws and the mount was still loose. As designed there are two pieces shaped like a claw and two rounded pieces that hold the mount in place. Claws are on one side of the mount, the round pieces sit on the other as the legs are cut to the specific depth for these pieces. I wish this worked because I love being able to use iron sights with an ACOG mounted.