UTG PROA(R) Original Snag-free Contoured Profile with Reduced Weight and Size incorporating the innovative P.O.IA(R) (Precision Optics Interface) which addresses 3 of the most critical areas in scope rings: Progressively Machined for a precise inner ring surface to achieve a seamless ring-to-scope interaction Low Profile and flush-fitting locking side plate controlled by dual spring loaded guide rods in