NSN 1005-01-625-3618 Designed for U.S. Special Operations Forces and under contract with Crane Naval Surface Warfare Center.
The P stands for precision. 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!
.50 moa = minute of angle, means at 100 meters, each click of the windage knob moves the apertures .50 = 1/2 inch, which means point of impact .50 left or right of the previous click setting. Pat. Nos 5533292, 7356962, D526380