Winchester Little Rifle Primers forty one

Winchester NATO-Spec Navy Primers 41 are the same primers used in the Lake City 5.56mm ammunition. These primers are built to exacting technical specs for shot to shot consistency. All primers are continually and rigorously tested winchester 41 primers for regularity and sensitivity at temperatures and situations much outside of the range of typical use. Winchester ensures diligently-controlled weights of primer mixtures, consistency in measurement and excellent, specific measurements and tolerances for anvil heights and security in extremes of temperatures and humidity.