Freedom Munitions 5.56x45 NATO 62 Grain Full Metal Jacket Brass Rifle Ammo 50 Rounds. 56 M855 loaded with a 62 grain projectile. Specifications for Freedom Munitions 5.56x45mm NATO 62 Grain Full Metal Jacket Brass Rifle Ammunition: Manufacturer: Freedom Munitions Caliber: 5.56x45mm NATO Number of Rounds: 50 Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 62 grain Cartridge Case Material: Brass Application: General Package Contents: Freedom Munitions 5.56x45mm NATO 62 Grain Full Metal Jacket Brass Rifle Ammunition What is Freedom Munitions 5.56x45mm NATO 62 Grain Full Metal Jacket Brass Rifle Ammunition good for? The manufacturer thinks that it is best for general.Freedom Munitions FM556MA62N50: 5.56x45 NATO 62 Grain Full Metal Jacket Brass Rifle Ammo 50 Rounds