LaserMax Uni-Max Red Rail Mount Laser with Integral Rail
This compact and rugged rail mount laser fits Picatinny; Mil-Spec; Weaver Style Rails (with minimum rail length of 1.75-Inch) Battery Type: 357 (2) Accuracy: User-adjusted for windage and elevation. Laser Operating Temperature: 5°F - 150°F. Wavelength: 635nm (red/orange) Power Output: 5mW. Spot Size: 5/16-Inch @ 7 Yds; 3/4-Inch @ 25 Yds.