Text below is from the thread. Link at bottom with pics. This is not mine.
Description: I made a thing! my suppressed MKIV is very quiet, but not as quiet as a bolt action 22lr. so I made a pump kit for my MKIV to keep the bolt closed during firing and keep all the gas going into the suppressor. inspired by CCM paintball guns and Booligan, this little guy is much more stable and faster than I expected it to be. and hilariously quiet. if you've ever shot a subsonic suppressed bolt action 22lr, then you understand why this gun is so much fun. Still very much a prototype in beta
https://www.reddit.com/r/gunsmithing/comments/sc4zdg/pump_action_ruger_mkiv_2245_in_22lr/?utm_medium=android_app&utm_source=share
Description: I made a thing! my suppressed MKIV is very quiet, but not as quiet as a bolt action 22lr. so I made a pump kit for my MKIV to keep the bolt closed during firing and keep all the gas going into the suppressor. inspired by CCM paintball guns and Booligan, this little guy is much more stable and faster than I expected it to be. and hilariously quiet. if you've ever shot a subsonic suppressed bolt action 22lr, then you understand why this gun is so much fun. Still very much a prototype in beta
https://www.reddit.com/r/gunsmithing/comments/sc4zdg/pump_action_ruger_mkiv_2245_in_22lr/?utm_medium=android_app&utm_source=share