TruGlo Sight•Line Compact handgun laser is lightweight and designed for concealed carry. Bright laser marks the point of impact on target with constant or pulsing beams. Laser is adjustable for windage and elevation with adjustable recoil lug for versatile positioning. Fits Picatinny, Weaver, Glock and many other pistol rails. Single battery design for easy replacement without removing laser from the rail with a battery life of 8 hours continuous and 18 hours in pulse mode. Includes CR1/3N battery.