BSA multi-caliber collimator (boresighter) is designed for use with pistol and rifle calibers, and helps you get on paper easily without wasting ammo or range time. Comes with .177 arbor, .22 arbor, 6mm arbor, .25 arbor, 6.5 mm arbor, .27 arbor, 7 mm arbor, .30 arbor, .32 arbor, .338 arbor, .35 arbor, .375 arbor, .44 arbor, .45 arbor, .50 arbor.

The boresighter kit is brand new. I purchased it a few years ago, but never used it. The price is $30.