Leupold 182848 BackCountry Cross-Slot Base Matte Black Nosler M21 20 MOA Black Powder Accessories This is the laser that

This is the laser that is used with all of the rifle caliber arbors to bore sight your rifle

The dual lever return to zero QD mount makes mounting and unmounting quick and easy

Not for Picatinny Accessories

The 34mm fixed mount is constructed of aircraft-grade 6061-T6 aluminum and finished in a matte black

Includes reversible

Leupold 182848 BackCountry Cross-Slot Base Matte Black Nosler M21 20 MOA Black Powder Accessories This is the laser thatBackCountry Cross Slot bases are machined from 7075 T6 aircraft grade aluminum for lightweight, rugged performance. Fits both Picatinny and Weaver style rings. Features a 20 MOA slope for long range shooting applications.