Laser Bore Sighter for airgun, rimfire and centerfire calibers .17, 22, 22 Magnum, 222, 5.56mm, 223, 22-250 and other rifles and handguns up to .225 bore diameter. Expandable arbor. A necessity for boresighting AR-15s and other rifles with scopes mounted high above the bore. NIB. $25 + $4.00 handling/shipping. For insurance add $1.30. I can send you a photo if you send me a PM with your email address.