Crimson Trace Ls870 LaserSaddle Red Laser Rem 870, Tac-14 12 Gauge Receiver The Ls-870 Lasersaddle Is a Feature-Packed Laser Sighting Solution For Remington 870 And Tac-14 shotguns In 12 Gauge Only. Attaching seamlessly To The Receiver, The Ls-870 provides An Ambidextrous Laser Activation Pad For Instant targeting With a Powerful 5Mw Red Or Green Laser. As With All Crimson Trace Laser Sights, The Ls-870 Is User-Adjustable For Windage And Elevation. The Ls-870 features a Master On/Off Switch For Completely powering Down The System. This Model provides 3 Hours Of Battery Life With Two Provided Cr2032 Or 4 Cr2016 Batteries. Does Not Fit 20 Gauge Or .410 Bore. Wavelength: 620-670 Nm Power: 5Mw Battery: Cr2032 Lithium Laser Color: Red Firearm Fit: Rem 870, Tac-14 12 Gauge Power Switch: On/Off Adjustments: Windage & Elevation Finish: Black Mount Type: Receiver