Streak .40 S&W Features Ammo Inc. STREAK Visual Ammunition's exclusive and patented technology allows the shooter to visually see the projectile's path towards its target. STREAK rounds are non-incendiary meaning they don't generate heat and thus are safe to use in environments where traditional tracers are prohibited and can be a serious fire hazard. The results are game-changing in many aspects for the consumer law enforcement and military. For indoor range use and nighttime shooting. Streak .40 S&W Specifications MFR:40180TMCSTRK UPC:818778020850 Caliber:.40 S&W Model:Streak Bullet Weight:180 gr Rounds Per Box:20 Casing Material:Brass Application:Recreational Shooting Boxes Per Case:10 Bullet Type:Total Metal Jacket (TMJ) Muzzle Energy:367 ft lbs Muzzle Velocity:958 fps