i installed one from area419. got one on clearance before they changed the style to the newer one with the teeth. have it on a grayboe ridgeback. removed the two mlok sections on the bottom of the rifle stock and used those holes to line up and install it. couldnt get the rear most hole designed to be on the forward action to line up cause of the grayboe dbm design. but its solid. used the first most rearward mlok screw and then two screws for the front mlok piece in the rail slot.