Please notice that the Ruger Shoulder Stock is only suitable for small calibers such as .22, .22 Magnum, .22 Hornet
Suitable for all .22 pistols having Picatinny-rails
No tools needed for mounting
There is a screw that you can tighten by hand or with 4mm allen head key
Length is adjustable.
For Ruger mark II/III, Browning Buck mark, Thompson Center, etc.