Ruger Mark IV 22/45 Tactical Pistol Single Shot Modification

[JasonO]

I'm looking to purchase a .22 pistol. I'm planning on putting a silencer on it and would like to know if anyone has modified a Ruger Mark IV 22/45 Tactical Pistol to be a single shot (similar to a bolt action). I'd like to use this to make it quieter for hunting purposes.

 

[XUSNORDIE]

Welcome aboard. Sounds like you want a version of the MK22 "Hush Puppy". Although not built on a Ruger platform, you may want to research it's history and development. I'm pretty certain it will give you an idea about slide function on a suppressed pistol.

 

[Cholo]

I know it can be done because I shot a MKII about 25 years ago that had a lever like a 1911 thumb safety that locked the slide in place when fired. The suppressor was integral with the barrel. The loudest part was the action cycling. Locked in place you could hear the firing pin hit.

I'd love to have a setup like that, too. Maybe a Google search will find someone who makes that modification. I'd like to know if you find someone.

 

[Mobuck]

The High Standard HDM (OSS model?) I had access to had been modified to use the slide locking safety to hold the slide closed if desired. The 'safety' was the half-cock notch. It was very quiet.
If you feel the need to shoot a 22/45 or MK pistol w/o having the bolt cycle, just hold it closed with the thumb of your support hand. Neither difficult or painful with sub-sonic ammo. While creating a manually operated, magazine fed pistol is a possible option, I'm not at all sure of the actual need or benefit. Maybe a bit of insight into the proposed scenario in which this small decrease in noise would be beneficial?

 

[XUSNORDIE]

The High Standard HDM (OSS model?) I had access to had been modified to use the slide locking safety to hold the slide closed if desired. The 'safety' was the half-cock notch. It was very quiet.
If you feel the need to shoot a 22/45 or MK pistol w/o having the bolt cycle, just hold it closed with the thumb of your support hand. Neither difficult or painful with sub-sonic ammo. While creating a manually operated, magazine fed pistol is a possible option, I'm not at all sure of the actual need or benefit. Maybe a bit of insight into the proposed scenario in which this small decrease in noise would be beneficial?

Same as the MK22 although it was a centerfire pistol (S&W M39 and M59).

I'm hoping he's planning to be covertly stealthy stalking squirrels or ground grizz.....and not, well

 

[TestEngineer]

I'm with Mobuck. Just hold the bolt closed with your thumb.

I too don't really understand some of the myths about animal behavior and what scares them. Blaze orange vests, cigarette smoke, gun shot sounds, and some other things will put animals on "alert status". But it's MOVEMENT that makes them hide or leave the area.

I've come into a flock of grouse and killed several of them without scattering the rest. What spooked the rest was when one flopped around a bit after being shot (.22 revolver). The first ones just fell over without flopping. Many more examples in my experiences.

 

[Mobuck]

I wasn't real fond of the 'Hush Puppy' as it lacked the accuracy to perform it's primary task. Could have just been the specimen that was available.
If it's 'front end' was properly maintained the High Standard was as accurate as the user could manage and whisper quiet.
Every time I shoot my 22/45 suppressor host, I get a little twinge from the past as the skeleton rattles around in the closet.

 

[Dan in MI]

I’ve considered making something for that exact purpose. I have a couple ideas rolling around. Don’t get too excited, the last two things I’ve invented for market rolled around for 4 or 5 years before I really got into serious designing.

 

[XUSNORDIE]

I wasn't real fond of the 'Hush Puppy' as it lacked the accuracy to perform it's primary task

Well it was well out of service by the time I saw one of the few remaining remaining from Coronado during a TAD stint with EODMU3 in the 80's. I really liked the M39 we issued our Air Crew. So when I had a chance to see and handle an actual MK22 it was very interesting. Players that used it much earlier had some great stories from their experiences. None of which would entail the MK22 needing much in the way of accuracy. Most use was no more than 50 feet or so, a lot much closer. If you used the MK22 Hush Puppy you must of served late 60's very early 70's. Granted, other pistols were called "Hush Puppy" but that was taken from the original Navy MK22.

Larue had made one out of Mod 41 platform that I did have a chance to fire, but only a mag into barrel, in a shop. Larue also made one for El Cajon PD out of a Ruger MKII that I fired in the same barrel.

 

[fwb124]

Thumb-Lock x 2. I do this on both Ruger Marks & Browning Buck Marks, with no downsides.

There are different mechanical ways to bolt lock a Ruger Mark, but I don't think the juice is worth the squeeze. That said, some of the designs are fascinating mechanically, and pretty cool and collectible if found on an ex-government gun like this one (which is not my gun):

 

[XUSNORDIE]

Dang. The OP dropped a question, his one and only post, and vanished......

 

[Mobuck]

^^Maybe we scared him off????

 

[XUSNORDIE]

Maybe they got him before he got them?

 

[Mobuck]

^^^Or maybe 'he' was 'them'.

 

[Ale-8(1)]

Maybe he contacted fwb124.