Suppressing a bull barreled Ruger Mark III 22/45

[viiiupndhead]

I have a rimfire suppressor in jail and I'm cooking on potential hosts. One possibility is a Ruger Mark III 22/45 with bull barrel. I'd need to have it threaded and possibly shortened. I'm also wondering about sound from the ejection port. Is there a way to dampen that or prevent the port from opening entirely to force the gas through the can? Looking for movie quiet on this one.

 

[Twangbanger]

The problem isn't gas coming out the ejection port. It's the mechanical clatter of the bolt cycling and slamming shut.

Don't know if John Tibbetts is still in business (TX), but when he did my suppressor, he modified my MKII with an ingenious turn-bolt modification to the rear of the receiver, where he cut it off and re-installed it so you can turn it and lock the bolt "ears" in place so the bolt is locked closed and doesn't cycle. It's simple enough I figure any good gunsmith could figure it out. It turns your gun into a slow bolt action, but really quiets it down.

The bolt noise is significant. Makes your suppressed gun sound like a spring piston airgun if you don't have a way to lock it closed.

 

[Win52C]

I have a rimfire suppressor in jail and I'm cooking on potential hosts. One possibility is a Ruger Mark III 22/45 with bull barrel. I'd need to have it threaded and possibly shortened. I'm also wondering about sound from the ejection port. Is there a way to dampen that or prevent the port from opening entirely to force the gas through the can? Looking for movie quiet on this one.

Put your thumb on the back of the bolt. Mission accomplished…lol

But seriously. I have a Mark 2. Shortened to 3.5 and threaded 1/2x28 It’s very quiet depending on ammo. And if you hold the bolt from moving. Even more so. As stated above. The movement of the mechanism causes more noise. Put it on a bolt gun for no moving parts during firing.

 

[viiiupndhead]

Put your thumb on the back of the bolt. Mission accomplished…lol

But seriously. I have a Mark 2. Shortened to 3.5 and threaded 1/2x28 It’s. Very very quiet depending on ammo. And if you hold the bolt from moving. Even more so. As stated above. The movement of the mechanism causes noise.

Seems like a very reasonable first step! I'll give that a try first. Need to check in with my local smithy on the threading. Would you do 3.5" again given the opportunity?

 

[daddyusmaximus]

"Movie quiet" is fun. At least I'm thinking it probably would be... but I don't really think it's all that necessary.
My MK III does the whole bolt cycle slap thing, and unless I were to shoot it in a library... I'm almost 100% sure nobody is gonna care enough about that "mechanical" sound to even bother looking up from their phone. I bet I could walk around on a crowded street, and if nobody saw me shoot it... they wouldn't know.

Unless you're out in the woods... and on guard duty. (therefore listening for such noises)
Even then, it would be difficult to determine direction and range with any accuracy.

BTW, the MK III target (like mine) comes threaded. I just sold one on here this last week.

 

[Win52C]

Seems like a very reasonable first step! I'll give that a try first. Need to check in with my local smithy on the threading. Would you do 3.5" again given the opportunity?

Yes. I like the shorter length. Makes it much more manageable with the can on it.

 

[viiiupndhead]

"Movie quiet" is fun. At least I'm thinking it probably would be... but I don't really think it's all that necessary.
My MK III does the whole bolt cycle slap thing, and unless I were to shoot it in a library... I'm almost 100% sure nobody is gonna care enough about that "mechanical" sound to even bother looking up from their phone. I bet I could walk around on a crowded street, and if nobody saw me shoot it... they wouldn't know.

Unless you're out in the woods... and on guard duty. (therefore listening for such noises)
Even then, it would be difficult to determine direction and range with any accuracy.

BTW, the MK III target (like mine) comes threaded. I just sold one on here this last week.

View attachment 312031

Nice pics! "Movie quiet" definitely isn't a need, more of a "challenge accepted" scenario. I already have the pistol and right now it just sits in the safe. Thinking the $$$ in machining will promote her status. I like the 22/45 a lot but I acquired a GSG 1911 a few years back (also threaded) that gets all the action now when I want to shoot a rimfire pistol.

 

[Rookie]

Here you go.


It's more accurate than I thought it would be. I can ring two inch steel at 10 yards pretty consistently. I had it cut down so it would fit in my holster with the suppressor attached. I use it to finish off coyotes when necessary.

 

[Max Volume]

I thought about a threaded Tac Sol barrel for my MKII's but they are rather pricey.

 

[indyartisan]

I thought about a threaded Tac Sol barrel for my MKII's but they are rather pricey.

I bought a Tac Sol upper for my slab sided MKII then decided I would leave the MKII as is and went looking for another lower.
I then ran into a long barreled 25th anniversary MKI at a good price that I then decided to leave in one piece as it was super clean.
I then traded a Walther HK mp5 22 for a stainless MKII and put the Tac Sol upper on it.
I suppose looking back I should have just bought the suppressor ready Ruger with the threaded barrel.
Fun gun though!

 

[daddyusmaximus]

Here you go.

View attachment 312067 View attachment 312068
It's more accurate than I thought it would be. I can ring two inch steel at 10 yards pretty consistently. I had it cut down so it would fit in my holster with the suppressor attached. I use it to finish off coyotes when necessary.
View attachment 312069

Ever chronoed that thing? Cool concept, but wondering just how much the little .22lr give up with that short a barrel.

 

[Rookie]

No. If I think about it, I'll do it tomorrow. For my purpose, it doesn't matter. All I need it to do is put a hole in a coyote's skull at 12 inches.

 

[Tactically Fat]

There are so many factory threaded options now for the Mk IV guns - you don't need to have an existing one threaded. Unless you just want to.

I have an older Mk II 22/45 that I did upgrade to a threaded PacLite upper. Ages ago. Came with a heavy 6" stainless steel bull barrel.

The suppressor matches the finish and diameter - so at a casual glance it looks like an integral piece.

 

[Win52C]

The Mark 2 wasn’t available from the factory threaded as I recall. Had to do it myself. Also tapered & thinned the barrel slightly to remove the warning since is was shortened 2”anyway. Relocated the front sight and done. Shown with AAC Aviator.

 

[viiiupndhead]

There are so many factory threaded options now for the Mk IV guns - you don't need to have an existing one threaded. Unless you just want to.

I have an older Mk II 22/45 that I did upgrade to a threaded PacLite upper. Ages ago. Came with a heavy 6" stainless steel bull barrel.

The suppressor matches the finish and diameter - so at a casual glance it looks like an integral piece.

Will definitely consider that depending on price to have the one I already own threaded. May just make sense to trade up.

 

[KokomoDave]

Uber lightweight 22/45 with TacSol upper. Gemtech non-cleanable can. I did a trigger kit from Volquartsen. I've not red dot'ed it yet. I have several, just not the funds to buy the correct mount.

 

[Rookie]

View attachment 312644

Uber lightweight 22/45 with TacSol upper. Gemtech non-cleanable can. I did a trigger kit from Volquartsen. I've not red dot'ed it yet. I have several, just not the funds to buy the correct mount.

If you look carefully at my gun, you'll notice the red dot mount isn't the correct mount for my red dot. All that mattered to me, is the screw holes lining up. I ordered a cheap mount from Amazon that was for a bushnell for around $30. I filed off the locator studs and mounted my shield.

 

[tbhausen]

You guys haven't seen this yet?

Ruger® Mark IV™ 22/45™ Tactical Rimfire Pistol Model 40179

ruger.com

 

[Stengun]

I am shooting a tac sol and a ruger 22/45 lite upper on a mk2 lower. Both treaded Balance is pretty good with the ruger suppressor and no too long

 

[SmolderOutdoors]

I had a 22/45 lite that I got through a dealer sales incentive program. Suppressing it wasn’t on my radar back then. With these form 4 approval times I’m kinda sad I sold it- could have been a fun host.