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The Site-Lite Magaser Boresighting System combines state-of-the-artaser technology with a magnetic system for pinpoint bore sighting accuracy. Just place the target 25 feet from the muzzle with theaser spot in the center,ine up the scope's cr
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Ultra bright 635nmaser provides superior accuracy for all firearms. Site-Lite SL-150 Ultra Magaser Boresighter fits all calibers from .22 to .50, plus 20 ga. and 12 ga. shotguns. No metal contacts the rifling, and no optional arbors are required.