The TA98 ACOG Quick Release mount utilizes a single lever system. It can be configured for left/right lever placement. It features the patent pending BLAC(TM) lever system which required no manual adjustment to attain a proper, rock solid engagement on a 1913 Picatinny rail. The ACOG Quick Release mount is precision CNC machined from a block of 6061-T6 aluminum and finished in hard coat type 3 mil-spec anodized black for a rock hard lasting finish.