Suppressors Suppressing a VZ 58.

[The Gump]

Can it be done with out damaging the rifle?

I plan to use a AAC 762S-DN-6.

I think the thread pitch on the muzzle is 14-1 but I have not confirmed it. This is according to Century Arms. If this is the pattern it appears AAC has a flash hider in that pattern according to the packaging my previous flash hiders came in.

How can I verify the concentricity of the threads of the muzzle in relationship to the bore?

 

[Bonjourjr]

Re: Suppressing a VZ 58.

I am waiting for my stamp for a AAC 762S-DN-6 and have intentions of suppressing my VZ58. I talked to my smith and he gave me two options. One is to press the barrel out of the receiver so it can be put in a lathe to check the concentricity of the threads and bore, or find a smith with a special lathe that will allow the stripped rifle(everything except the barrel and receiver) to fit in the lathe. As far as the thread pattern, I have a Czechpiont (D-technik) rifle and the factory barrel is threaded 14x1mm RH. Its a weird thread pitch and I have only found one other rifle with the same pitch which is the yugo SKS.

 

[Bonjourjr]

Re: Suppressing a VZ 58.

What kind of VZ58 do you have? century? Czechpoint? The century rifle is made with an American made non chrome lined barrel that is 16in while the Czechpoint rifles use the original Czech surplus chrome lined 15.4in barrels with a welded on muzzle extension. So if you don't pin your muzzle attachment on a czechpoint rifle, then you will be in possession of an unregistered SBR. It is stupid that .6in can make the difference of violating NFA regulations, but what can you do. It is the law.

 

[biffj]

Re: Suppressing a VZ 58.

The Vz58 has a very similar problem to the AK-a large gas port and a big vent. That means you get a lot of noise out of the gas system so the can won't reduce the noise as much as you might want. The other issue is back pressure overboosting the piston and slamming the bolt back way too hard. Its pretty hard on the internals and the locking system. As others noted the barrels are just under 16" normally so unless you can find a specially made barrel you'll need to make sure your barrel nut is welded or pinned in place. You can have the muzzle nut threaded if you really want to go forward. It is possible, it has been done but in the big scheme of things its not worth the trouble.

Frank

 

[The Gump]

Re: Suppressing a VZ 58.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: biffj</div><div class="ubbcode-body">The Vz58 has a very similar problem to the AK-a large gas port and a big vent. That means you get a lot of noise out of the gas system so the can won't reduce the noise as much as you might want. The other issue is back pressure overboosting the piston and slamming the bolt back way too hard. Its pretty hard on the internals and the locking system. As others noted the barrels are just under 16" normally so unless you can find a specially made barrel you'll need to make sure your barrel nut is welded or pinned in place. You can have the muzzle nut threaded if you really want to go forward. It is possible, it has been done but in the big scheme of things its not worth the trouble.

Frank
</div></div>

My first concern was over-gassing the gun. I don't really want to put wear and tear on the gun. I have thought about searching for a replacement spring to slow the cycling. It is a Century so I'm good to go on the barrel length.

My suppressor is a fast attach. The flash hider steps over the barrel. The threads come up to the front sight post so I think I will having trouble obtaining enough thread engagement.

I do realize that the gas ports are large but after shooting with a suppressor I do not want to be around an unsuppressed rifle again.

I think you may be correct in stating that it is more work than it is worth.

 

[nleaders]

Re: Suppressing a VZ 58.

Check out the thread I started about AK suppressor... I got a ton of good feedback and have since forgotten about suppressing the AK family of firearms.

 

[nleaders]

Re: Suppressing a VZ 58.

Now, I don't know if an AR in 300BLK is somthing you would look into, but they are supposed to be the bomb.

 

[Bonjourjr]

Re: Suppressing a VZ 58.

The vz58 is completely different than the ak. They only share the same caliber. The Vz uses a short stroke piston. Where as the ak uses the long stroke piston fixed to the bcg. Suppressing the vz58 should be no different than suppressing a 308 piston AR. If you are worried about over gassing the system. Polish the piston head down to creat less of a seal in the "gas block" so the piston isn't forced back so violently. This would help with the gas issue. I would be more worried about the bore,barrel, and threads being concentric. Than over gassing the gun. You can always weld over the gas port and drill it to a smaller size to mitigate the high flow of gas associated with the use of a suppressor. I have the time and money to invest in this project and intend to see my vz58 suppressed very soon (waitIng on stamp). Thanks

John B.

 

[The Gump]

Re: Suppressing a VZ 58.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: nleaders</div><div class="ubbcode-body">Now, I don't know if an AR in 300BLK is somthing you would look into, but they are supposed to be the bomb. </div></div>

I've already got an 8" 300BLK and yes, it is the bomb. I worked up a load using 208 AMAX's and ran them through it this weekend. I have to say, being shot with a TBAC, it was quiet.

That being said, I want my VZ58 to be suppressed.

 

[The Gump]

Re: Suppressing a VZ 58.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 7.62DAV</div><div class="ubbcode-body">The vz58 is completely different than the ak. They only share the same caliber. The Vz uses a short stroke piston. Where as the ak uses the long stroke piston fixed to the bcg. Suppressing the vz58 should be no different than suppressing a 308 piston AR. If you are worried about over gassing the system. Polish the piston head down to creat less of a seal in the "gas block" so the piston isn't forced back so violently. This would help with the gas issue. I would be more worried about the bore,barrel, and threads being concentric. Than over gassing the gun. You can always weld over the gas port and drill it to a smaller size to mitigate the high flow of gas associated with the use of a suppressor. I have the time and money to invest in this project and intend to see my vz58 suppressed very soon (waitIng on stamp). Thanks

John B. </div></div>

Please keep us posted with your results.