A shotgun is best stored with its firing pins released, not cocked, for less wear on springs. Our highest-quality shotgun snap caps let you safely relax spring tension without dry firing the pins. The impact point on the caps are spring loaded to cause even less stress on the firing pins. Rubber ring around the snap cap keeps the caps from flying out on auto eject guns. Just pop in and press the trigger. Set of two shotgun snap caps. Wooden presentation box included. In silver. Made in USA.