First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo 1000 Rounds

First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo 1000 Rounds. 56 NATO 55 grain match-grade ammunition. FB USA .223REM Headstamp. Specifications for First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammunition - Bulk: Manufacturer: First Breach Caliber: 5.56x45mm NATO Number of Rounds: 1000 Bullet Type: Full Metal Jacket Boat Tail (FMJBT) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3250 ft/s