Aimpoint Throw Lever Ring - 30mm - Designed exclusively for the Aimpoint Comp. M/M2/ML2/M3/ML3 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. Low std. height allows perfect Red Dot co-witnessing on M16/M4 with A.R.M.S.® #38™ Sleeves, S.I.R.® and any 1/2 inch riser without a spacer. A full spacer is required if mounting directly on the flat top rail. 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/ML3 and M2/M3 variations of the Aimpoint Comp. Sight.