Firefield Rival XL Combo 5mW 532 Nm Wavelength Red Laser 75/150 Lumens. It features an ambidextrous digital switch 5mW green laser and is windage/elevation adjustable. It also has quick target acquisition and is visible up to 50 yds during the day and 600 yds at night. The combo utilizes the M-LOK system for mounting. Specifications for Firefield FF35010K Rival XL Combo 5mW 532 Nm Wavelength Red Laser 75/150 Lumens: Manufacturer: Firefield Light Output: 75 - 150 lumens Bulb Type: LED Battery Type: CR123A Beam Color: Red Color: Black Gun Model: Universal Length: 4.33 in Weight: 3.2 oz Finish: Matte Black Condition: New Last Chance: Yes Mount Type: M-LOK Wavelength: 532 nm Firefield FF35010K Rival XL Combo 5mW 532 Nm Wavelength Red Laser 75/150 Lumens Firefield FF35010K Rival XL Combo 5mW 532 Nm Wavelength Red Laser 75/150 Lumens