Description MEC Sight Riser Block Club SR Variable riser block with rapid-fix-system To mount quickly and safely with one hand Tightening torque individually adjustable Base height 11mm Vertical adjustment in increments up to a final height of 24mm One horizontal offset out to 4mm Rear-sight-dovetail plate can shift 25mm Centra/Mec item # 19917984, 19917985, 19917986 OE SKU # 15127, 15129, 15130
