Descripton: Uni Max Red Laser for Picatinny / Weaver Rails. LaserMax's rail mounted laser sight quickly and securely attaches to any Picatinny or Weaver style rail, allowing for multi-use between pistol and long gun platforms. It is truly evolutionary because it incorporates its own integral Picatinny rail mount, allowing for additional accessories to be stacked onto the unit. Mounting multiple LaserMax systems will enable both visible and infrared targeting while still maintaining a smaller footprint than competing laser sighting systems. Specifications: For: Picatinny; Mil-Spec; Weaver Style Rails (w/ minimum rail length of 1.75") Battery Type: 357 (2) Accuracy: User-adjusted for windage and elevation. Laser Operating Temperature: 10deg. F - 130deg. F Wavelength: 635nm (red/orange) Power Output: 5mW Spot Size: 5/16" @ 7 Yds; 3/4" @ 25 Yds