AmmoDyn 7.62x51mm NATO 149 Grain Full Metal Jacket Brass Cased Rifle Ammo 20 Rounds NSN 1305.27.070.5345. 6251mm service ammunition. Built for serious rifle training and field marksmanshipan honest duty-focused load for shooters who want consistency they can document across sessions. Specifications for AmmoDyn 7.62x51mm NATO 149 Grain Full Metal Jacket Brass Cased Rifle Ammunition: Manufacturer: AmmoDyn Caliber: 7.62x51mm NATO Number of Rounds: 20 Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 149 grain Cartridge Case Material: Brass Features of AmmoDyn 7.62x51mm NATO 149 Grain Full Metal Jacket Brass Cased Rifle Ammunition NATO-spec M80 Sealed primers Waterproofed Extreme-temperature tested Rifle training load Non-corrosive Package Contents: AmmoDyn 7.62x51mm NATO 149 Grain Full Metal Jacket Brass Cased Rifle Ammunition AmmoDyn PM-762149-20: 7.62x51mm NATO 149 Grain Full Metal Jacket Brass Cased Rifle Ammo 20 Rounds NSN 1305.27.070.5345