sentences:  In 2010, Chiappa began marketing a version of the Aircrew Survival Weapon called the Chiappa M6 Survival Gun.The Chiappa has a 12 gauge shotgun or 20 gauge barrel over a .22 Long Rifle or .22 Magnum barrel.In addition, it comes with "X Caliber" adapters sleeves that 
  fit inside the 12 gauge barrel allowing it to fire