AP Style M2 Red/Green Dot w/ Cantilever Mount BKThe M2 Red dot scope, a modern classic in the Airsoft world. One of the earliest styles of red dot scopes in Airsoft, the M2 pattern is a military styled scope with simplistic operation. Windage and elevation adjustable Red color dot reticle with 5 levels of brightness. It drop right on to an accessory rail with a simple screw type rail attachment bracket. Requires 2 x LR44 batteries (sold separately) AO 5033 BK