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20 Gauge Boresight Arbor

20 Gauge Boresight Arbor

The Osprey Global Boresight Arbor range allows you to convert the Osprey Global .223 Green Laser Boresight (Sold separately) to fit a wide range of the most popular caliber firearms. This allows users to have premium green laser arbors for all of their firearms at minimal cost. These arbors are backed by Osprey’s industry leading no-nonsense lifetime warranty.



Make sure the battery cap is secure on the back of the 223 Green Boresight with batteries properly installed. Do not overtighten. Unscrew the rear cap of the arbor and insert the 223 Green Boresight. Replace the rear cap of the arbor until secure, do not over tighten. Carefully place the device into the chamber of the firearm and slowly close the bolt. This will activate your boresight. Sight in your firearm (specific instructions below).  Remove the boresight by opening the bolt and ejecting the boresight, the boresight should deactivate.



Locate a target 20-30 yards away so the laser can be clearly seen. The laser point is the theoretical point of impact. Adjust the windage and elevation of the sight to the laser. Remove the boresight from the chamber and remove batteries. Adjust the scope or rifle for the change in distance according to the scope, ammunition, and the rifle manufacturer’s instructions.



  • Requires .223 Green Laser Boresight
  • High Quality Brass
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