This mount fits all VCOGs, the 1x42 Reflex (with ACOG base), and the 3.5x" 4x and 5.5x ACOGs. The AC12033 quick release mount utilizes a single lever system. It features the patented BLAC(TM) lever system which requires no manual adjustments to attain a proper, rock solid engagement on a 1913 picatinny rail.

Features :

• ,Distance from top rail to optical axis, 3x" 4x and 5.5x ACOG = 1.535 in. VCOG = 1.535 in. 1x42 Reflex = 1.506 in.,