Ruger .22LR Laser Bore Sight, Sighter, Front Insert Arbor Boresighter 
Precision Machined Brass to Fit the Muzzle, Not Rubber Ring Tightened
It is a perfect Tool to sight in you Iron Sight, Red Dot and Scope
 
Arbor diameter Precisely Machined to Fit all .22 LR R,P,and H, 
as long as it has a .22lr Muzzle Diameter, Battery Included
it fit all .22 LR Muzzles, as it is a precision machined Arbor insert into the Muzzle
It fits Ruger, SW, Remington, KT, Colt, Browning,Beretta, Walther,arlin, CZ, Mossberg, Winchester, Phoenix, etc.
.Red Laser Dot
.Battery AG3 3PC
.Material: Brass
.Weught: 0.51 OZ   14.6 G