Fort scott munitions tui ammo is a match-grade bullet made of solid copper and engineered to tumble upon impact providing devastating stopping power.While designed as precision ammo for rifle hunters fort scott's multi-patented tui technology also makes them ideal rounds for home and self-defense or law enforcement.Caliber: 5.56x45mm NATOBullet Type: Solid Copper SpunBullet Weight: 62 grMuzzle Energy: 1410 ft lbsMuzzle Velocity: 3200 fpsRounds Per Box: 20Boxes Per Case: 25Application: Defense/HuntingCasing Material: BrassHazair: Yes