BSA Bore Sight with 15 Fixed Arbors

The BSA Boresighter makes sighting in a gun much easier by aligning a scope's reticle with the barrel, getting you on paper before you even get to the range. It comes with 15 arbors for use with rifles. Works for 177 pellet guns (not for 17 rimfire or centerfire barrels) all the way up to 50 caliber. Includes a protective hard plastic case. Includes: 15 Arbors in calibers:.177 - (Will not fit .172 groove diameter rimfire or centerfire barrels. Examples are the 17 Remington, 17 HMR, 17 HM2. The arbor in this kit will not work in these barrels.).226mm.256.5mm.277mm.30.32.338.35.375.44.45.50. Notes:Comes in a hard protective carry caseIntended for use with rifles only, not with handguns