This supersonic duty round is engineered for reliable, controlled 1.8x expansion. The supersonic SBR Elite Copper Duty ammunition features an all-copper bullet and black oxide shell case to visually denote SBR capability. Velocity is 1, 897 fps with muzzle energy of 959 ft-lbs out of a 6.75 inch barrel. Specification Ammo Type Rifle Caliber 300 BLK Grain Weight 120 gr Qty Per Package 20 Muzzle Velocity 1897 fps Muzzle Energy 959 ft-lb | Sig Sauer SBR .300 AAC Blackout 120 Grain Solid Copper | 20 Rounds
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