Raises the optic 1 1/2" and has a see-thru tunnel. The A.R.M.S.® #54 Throw lever mount for the Eotech Holosight(and similar HUD type sights) raises the optic 1 1/2" and features a see-thru channel to allow the operator to view their iron sights in case the optic fails. *
The additional height of the #54 raises the optic high enough to be easily used while wearing a gas mask or shooting from a chest mounted heads up position.
Weight - 4.3 oz
*when mounted on a Swan® Sleeve or A.R.M.S.® SIR® system