Brass Red Dot Bore Sight Laser Boresighter Cal 7X57R Rifle Gun w/Battery

7X57R Red Laser Bore Sight Specifications 1 x 7X57R Bore Sight. Life Span: >8,000hrs. Type: Visible Red Laser. Laser Wavelength: 635nm. Construction: Brass, gold-plated. Battery: 3 x LR754.

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