16-gauge-16ga-red-laser-bore-sight
16-gauge-16ga-red-laser-bore-sight, Sighting Range: 15-100 yards.Easy to sit perfectly in the bore; Sturdy aluminum construction.Max. Output Power: 5mW; Wavelength: 625-650nm; Laser class: IIIa; Laser range: 5-100m.2 sets (6 total) of batteries included.