The ad-68 aimpoint mount provides several solutions for the aimpoint m68/compm2.Low, co-witness, and lower 1/3 co-witness heights are offered in 30mm ring size.It is precision machined from 6061 t6 aluminum and finished in hard coat t3 mil-spec anodize.It features the patented qd auto lock(tm) lever system in either standard or tac design to accommodate both in spec and out of spec rail systems.Model: Aimpoint M68/CompM2Style: 1-PieceFinish: AnodizedMaterial: 6061-T6 AluminumRings Included: Yes