Quick view Federal XM193ML1 5.56 Nato 55 Grain Ammo Can 400 Rounds .auto-style1 { font-family: Verdana; } Federal XM193ML1 5.56 Nato 55 Grain Ammo Can 400 Rounds Cartridge: 5.56x45mm NATO Grain Weight: 55 Grains Quantity: 400 Round Muzzle Velocity: 3165 Feet Per Second Muzzle... $319.99 Add to Cart Compare