A.R.M.S.® #50™M Bi-Level S.I.R.® System Military Version Bi-Level Slimline, for 5.56 cal. Carbine length M4´s. Fits flat-top equipped weapons with carbine length gas systems. The #50™ is a slim line S.I.R.® featuring a bi-level top dovetail rail. The forward rail section is lowered to allow co-witnessing of heads up display type optics when used in conjunction with our #40™ series rear sights and a standard height front sight post. Installation requires the removal of the delta ring. Weight: 15.0 oz* *Wt. measured w/o 1,2,3 rails and sling swivel which are included with the S.I.R.® system. Rails can be removed/added as needed.
This item or some of it's components cannot be exported from the United States of America. US Military APO Addresses exempt.