For Ruger MK Charging Ring, Compatible With Ruger MK I, II, III, MK IV MK 22/45 Bolt Racker Matte Black
- Lightweight aircraft grade aluminum
- Easy to install
- Can be mounted for right or left handed shooters
there have been three sizes of bolt handles on the factory Ruger mark pistols throughout the years. please choose the correct size that corresponds to your bolt.