Millett Tactical QRF-L Quick Release Standard Height Red Dot Long Scope Mount Tool free, rapid attachment - press button and apply to rail; optic will return to zero every time 3 cross ribs offer unmatched security Grabs more rail - more surface area contact ensures more secure optics Designed for red dots, reflex sights, small flashlights, laser sights and any item with a Pica tinny rail attachment Correct height for AR sights