Ncstar Atrls Tri- Rail Universal Barrel Mount Black Anodized Red Laser

NCStar's Red Laser Sight with Universal Barrel Mount features a tri-rail universal barrel mount which is compatible with most standard rifle barrel diameters. Constructed of aluminum and plastic the laser has a 635-655nm wavelength with a 5mW output and a side to side toggle on/off switch. It uses and includes two AG13 batteries and mounting tools.