Carlsons Brass/wool Snap Cap 12 Ga.

These Brass Wool snap caps have a spring loaded primer plunger which prevents firing pin damage during dry-firing exercises. Treat the wool chamber mop with your favorite gun oil to prevent rusty chambers during storage.

Features:Spring loaded primer plunger;Prevents firing pin damage;Wool chamber mop can be treated with gun oil;Keep in firearm during storage;Use with gun oil helps prevent rusty chambers