Vintorez style shroud on a Disco

[Shrubbery]

Would you think this idea could be worth a try? Essentially a large shroud that goes over the entire barrel and tube assembly and also acts as a foregrip. two mounting rings at the front and the back secure the shroud to the gas tube. The barrel would need to be cut down a few inches to allow the gas to expand inside of the shroud. The shroud would need to be axially centered to the gas tube to allow use of iron sights. It would need to be just as long as the gas tub so as not to conceal the fill nipple.




Why? Why not. It could have significant noise reduction without the added length of an LDC.

[RichH]

Why not? You would have to significantly rise the breech in order to have room for the shroud to fit without touching the air tube. The design of the hammer and pin in the disco does not work very well with this. The additional height of the hammer pin and the resulting leverage point moving higher causes the hammer to tilt inside the tube resulting in galling. IMHO too much additional engineering/work for the perceived benefit.

[Shrubbery]

Why not? You would have to significantly rise the breech in order to have room for the shroud to fit without touching the air tube. The design of the hammer and pin in the disco does not work very well with this. The additional height of the hammer pin and the resulting leverage point moving higher causes the hammer to tilt inside the tube resulting in galling. IMHO too much additional engineering/work for the perceived benefit.

The shroud would go around the gas tube and the barrel, it would be one big 2" tube completely concealing both barrel and tube, thus making no need to modify the breech height.

[RichH]

OK now I understand, but not sure how you are going to secure it. Are you are going to 3d print a "bushing" to go around the tube and the barrel? Get rid of half of the stock? Remember the gauge block is just about directly under the barrel where it goes into the breech. Then you are going to have to raise the scope mounts up.

[bantam5s]

It would be cool if you're trying to replicate the DeLisle carbine or something.

[RichH]

Also to get the noise reduction the end will have to all be sealed except a small exit hole. How do you propose filling the gun?

[Shrubbery]

OK now I understand, but not sure how you are going to secure it. Are you are going to 3d print a "bushing" to go around the tube and the barrel? Get rid of half of the stock? Remember the gauge block is just about directly under the barrel where it goes into the breech. Then you are going to have to raise the scope mounts up.

As far as securing the shroud, I have to consider this further, but initially I think a simple 3d printed bushing that friction fits to the pressure tube, which the shroud will slide over and perhaps screws to secure it. My design will implement the gauge block bypass valve by Magnum Airpower so that will address the issue of the pressure gauge being in the way. Indeed the stock will need to be reshaped to accommodate the bulk of the shroud.

Also to get the noise reduction the end will have to all be sealed except a small exit hole. How do you propose filling the gun?

Most likely by having the shroud end right at the end of the gas tube, and the end cap for the shroud would have a 7/8" hole to allow the last 1/8" of the tube to stick out.

This is all still very much conceptual drawing board level. I do hope to have something come out of this though, I think the noise reduction could be...Unheard of.

[avator]

I suppose you are after the unique look as well as quieting down the report of the Disco. But if it's just quieting down the gun is your goal you could go a step farther and make a repeater out of the gun by adding an aftermarket repeating receiver like I did with a Maximus build that I did. I used the GMAC but if I had it to do again I would go with the Exclusive repeating receiver with the side lever.
It's not very cost effective because of the price of these parts.. especially the receiver. The receiver significantly raises the barrel and gave me plenty of room to add a Fortitude shroud without inletting the Boyds thumbhole stock. And as you would imagine, I also had to cut and crown the 26" Maximus barrel to fit the length of the shroud.
I ended you with a 2k max fill repeater gun that I could have just bought a Fortitude and had money left over. But I did it "because I could". Which is likely why you want to do this project. 

[SILENT SQUIRREL]

I suppose you are after the unique look as well as quieting down the report of the Disco. But if it's just quieting down the gun is your goal you could go a step farther and make a repeater out of the gun by adding an aftermarket repeating receiver like I did with a Maximus build that I did. I used the GMAC but if I had it to do again I would go with the Exclusive repeating receiver with the side lever.
It's not very cost effective because of the price of these parts.. especially the receiver. The receiver significantly raises the barrel and gave me plenty of room to add a Fortitude shroud without inletting the Boyds thumbhole stock. And as you would imagine, I also had to cut and crown the 26" Maximus barrel to fit the length of the shroud.
I ended you with a 2k max fill repeater gun that I could have just bought a Fortitude and had money left over. But I did it "because I could". Which is likely why you want to do this project. 

Right you are Bill about the repeating receivers
I've been actively searching for one with a WTB add in the forums.
If you, or anyone else has one available I would sure like to know.

Thanks
Edward

[avator]

I suppose you are after the unique look as well as quieting down the report of the Disco. But if it's just quieting down the gun is your goal you could go a step farther and make a repeater out of the gun by adding an aftermarket repeating receiver like I did with a Maximus build that I did. I used the GMAC but if I had it to do again I would go with the Exclusive repeating receiver with the side lever.
It's not very cost effective because of the price of these parts.. especially the receiver. The receiver significantly raises the barrel and gave me plenty of room to add a Fortitude shroud without inletting the Boyds thumbhole stock. And as you would imagine, I also had to cut and crown the 26" Maximus barrel to fit the length of the shroud.
I ended you with a 2k max fill repeater gun that I could have just bought a Fortitude and had money left over. But I did it "because I could". Which is likely why you want to do this project. 

Right you are Bill about the repeating receivers
I've been actively searching for one with a WTB add in the forums.
If you, or anyone else has one available I would sure like to know.

Thanks
Edward

That's the only one I ever bought or have. And I paid too much money for it. Back then we didn't have a whole lot of affordable options in repeating guns. The marauder was popular if you had the cash to lay out up front for one. I bought 2 Maximus from another member for $200 and pieced this one together as money became available. I had to have a member 3D print a custom barrel band last year.
This is Betty Lou's gun and the payoff is seeing the smile on her face when she shoots it.

[AKM]

It sounds like a machining nightmare to keep everything concentric.

You will need o-rings on both ends of your caps to seal well enough to contain the pressure during firing.

For the Vintorez system to work the barrel has to be super short in order to obtain the volume needed to suppress.

Good air gun suppressors rely on volume and tight baffle/end cap clearance holes in order to be effective. Look at how big the baffle holes are in the Vintorez.

Besides being cool looking I don't see any advantage.

Good luck.