This mount fits all VCOG’s” the 1×42 Reflex (with ACOG base)” and the 3.5x” 4x and 5.5x ACOG’s. 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.
Trijicon Quick Release Mount, Fits 3.5X, 4.5X, 5.5X ACOGs, 1-6X VCOG, and 1X42 Reflex with ACOG Base AC12033