8301 targeting instrument Color: Black Working Principle: Our school uses red beam lasers, which can be seen as red dots, and uses tube-directing calibration. Wavelength: 520nm Output: 5mW Length: 155mm; Head diameter: 16mm; Tail diameter: 4.9mm Weight: 50g Total weight: 110g Size: 155X16X16MM Material: Metal Material Suitable for: 0.22 small diameter to 0.50 large diameter (5.59 to 12.7mm diameter)
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