Shop › FRONTIER 556NATO 68GR BTHP MTCH 20/5 FRONTIER 556NATO 68GR BTHP MTCH 20/5 $19.95 Frontier Cartridge Lake City, 556 NATO, 68 Grain, Boat Tail Hollow Point, 20 Round Box FR310 Quantity: Add To Cart Added! Frontier Cartridge Lake City, 556 NATO, 68 Grain, Boat Tail Hollow Point, 20 Round Box FR310