JG10R Picatinny Rail Red Laser Sight.  This integrated rail red laser is machined from high-strength aircraft aluminum with hard anodized finish, it comes with locking crossbolts and recoil stop to hold zero firmly against heavy recoil and impacts. Built-in top Picatinny rail offers extra space for auxiliary optics or accessories. Visible up to 50m in daylight and 1000m after dark. Separate windage and elevation adjustment knobs let you quickly calibrate zero with the included wrench. Compact low-profile body mounts directly on standard 20mm rails without extra adapters. Magnetic USB rechargeable design fully charges in 1.5 hours for 2 hours of continuous runtime.