The California Competition Works Shell Caddy Tactical Shotshell Ammunition Carrier is made of glass-filled nylon. This carrier comes with two spacers - the thin one is used with U.S. made slugs, the thick one allows 2-3/4" U.S. made buckshot and birdshot. The 6 round capacity speed stripper will also hold one 20-round AR-15 magazine. Provides controlled carry of six, 3" Or 2 3/4 12 gauge shells for fast, fumble-free reloads. Clips to belt, allows spare rounds to be grasped without fumbling or dropping; reduces reload times. Spacers adapt for shorter rounds. Made of a glass filled nylon, also provided are two spacers the thin one takes up the space for U.S. slugs, the thick one allows the use of 2 3/4" U.S. buck/bird shot. A Quick-Lock belt fastener clip is installed for use w/ military and police duty belts and molle webbing.