Shop › FRONTIER 556NATO 55GR HP MTCH 20/500 FRONTIER 556NATO 55GR HP MTCH 20/500 $17.95 Frontier Cartridge Lake City, 556 NATO, 55 Grain, Hollow Point Match, 20 Round Box FR240 Quantity: Add To Cart Added! Frontier Cartridge Lake City, 556 NATO, 55 Grain, Hollow Point Match, 20 Round Box FR240