The Leapers UTG Instant Target Aiming Bull Dot Compact Green Laser is built on the True Strength Platform using Smart Spherical Structure design. The combination of TS and SSS gives you extremely precise windage/elevation adjustments and the toughest recoil resistance! You can safely and securely mount this laser to any weapon system using the integral picatinny/weaver rail mount. It's tough enough to hold a zero on your AR-15, tactical shotgun, or defensive pistol regardless of recoil. Featuring an expanded laser dot for quick target acquisition, the bright green 3R laser can be seen out to 300 yards!