A.R.M.S. #40™L Low Profile Rear Sight
SN 1005-01-575-3508. Selected as the best and was awarded a contract from Crane NSWC for use by U.S. Spec. Forces. 100% MADE IN THE USA. THEY LEAN TO THE REAR SO AS TO FOLD IN THE CORRECT DIRECTION IF DROPPED, THUS MAINTAINING THEIR ZERO FOR ACCURACY AND GIVE LONGER TROUBLE FREE SERVICE LIFE!
The #40™L has all the features of our excellent 40A2 sight, but has a lower profile, allowing more clearance for mounting optics to your flat-top receiver and allows lower mounting, miniaturized windage knob with .75 MOA adjustment and a very new and unique dual aperature. (Go to #40L-P for .50 MOA.) Folded height is only .610". US Pat. 5533292,7356962,D526380