To38 Red Laser Diode 635nm 120MW 3.8mm Laser Diode - China Laser Diode, Red Laser Diode | Made-in-China.com
Roithner Lasertechnik - Dot Laser Modules, 635 nm
ArmaLaser TR41 Designed to fit Taurus GX4 Red Laser Sight with GripTouch Activation [Does NOT FIT Any Other Pistol, only Taurus GX4] : Sports & Outdoors - Amazon.com