This ammo, a grenade round, goes with Friday's Firearm, the AA-12. The FRAG-12 12-gauge grenades/munitions were designed and developed by Experimental Cartridge Company Ltd. of England/Great Britain/United Kingdom (UK), and are currently being manufactured by Action Manufacturing Company (AMC), located in Philadelphia, PA. The FRAG-12 munition family includes High Explosive (HE), High Explosive Fragmenting Antipersonnel (HE-FA), and High Explosive Armor-Piercing (HE-AP) rounds. The FRAG-12 grenade rounds/munitions utilize fin stabilization for accuracy on target.