The #72 mount also include the new MK ll Levers featuring a built in precision adjustment wheel allowing finger tip (no tool) selection to desired tension to fit variations in 1913 mil-standard dimensions. Precision tension means Precision accuracy. The mounts adjustment wheel comes pre-gauged and locked to the center of the mil std. dovetail specs. The hash marks to the left or right of the adjustment wheels white marked indicator line, represent .002. Also available in Ext. model for 5.56 cal. Graph clearly demonstrates that the ARMS #72 series of mounts offer a tremendous reduction in harmonics and initial shock impact to an electro optical device.
US Patent US 8,112,933 B1. The A.R.M.S. Inc. .50 Cal. Plus #72 mount features a built in harmonic spring dampener system that significantly reduces damaging shock waves, allowing sensitive electro/optic aiming devices to better survive, high volume firing on all caliber man portable and crew served weaponry. 100% MADE IN THE USA.
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