Winchester Smaller Rifle Primers forty one
Winchester NATO-Spec Navy Primers forty one are a similar primers used in the Lake City 5.56mm ammunition. These primers are designed to exacting specifications for shot to shot regularity. All primers are continuously and rigorously tested for consistency and sensitivity at temperatures and problems significantly further than the number of ordinary use. Winchester ensures thoroughly-controlled weights of primer mixtures, consistency in sizing and quality, specific measurements and tolerances for anvil heights and balance in winchester 41 primers extremes of temperatures and humidity.