Green Laser Training Cartridge 357 SIG Caliber for Dry Fire Training Practice Including Extra Built in Rubber Snap Cap 

• BRIGHTNESS: Bright green class IIIA(<5mW), Wavelength range 630 - 660nm, Sighting range of the 357SIG laser training bullet is 5 to 100 yards. Provide your the brightest beam allowed by law for your laser training practice.
• High Quality Material: Laser training cartridge uses sturdy brass, 2 O-Rings and rubber snap cap(Cushioning the striker pin to avoid any potential dry-fire damage), excellent corrosion resistant, ensuring that the sight can be applied to handgun or pistol that uses 357 SIG bullets.
• Convenient Training: Easily compatible with most free mobile app for iPhone and Android phones to track your shots. Practice the basics of trigger control and light beam sights at your home anytime.
• Economical: Comes with 4 Sets of Batteries, 2 Back Caps and 6 O-Rings. More than 3000 Shots per set of batteries. Long-lasting drill 357 SIG dry fire training. Reduce 357SIG ammo wasted.
• Fits: 357 SIG caliber firearms.