Aimpoint Throw Lever Ring - 30mm - Designed exclusively for the Aimpoint Comp. The A.R.M.S. unique ring saddle allows for optimum surface contact for the most secure fit. Ultra rugged and low mounting that can also be modularly raised via optional spacer platforms. The spacers can be added at a modest cost. Secured to an A.R.M.S. #17 Platform with the A.R.M.S. patented Throw Lever system guarantees easy on and off repeat zero. Built in no mar patented buffer pad. This unit now fits both the model ML2 and M2 variations of the Aimpoint Comp. Sight. This mount will also accommodate the new Trijicon Tri-Power Sight. 22M68Spacers also available for added height.