A.R.M.S., Inc. Arms Throw Lever Mount For EO Tech Optic 54

A.R.M.S.® #54™ Throw Lever® for L3 EOTech Type Optics

Raises the optic 1 1/2" and has a see-thru tunnel. 100% MADE IN THE USA.
 
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.  
*when mounted on a Swan® Sleeve or A.R.M.S.® SIR® system.
NSN 1005015525756. U.S. Patent No. 5276988 & 7493721