The Original CZ Forum

CZ LONG ARMS => VZ-58 semi auto rifle => Topic started by: DJokr on November 18, 2009, 08:03:32 PM

Title: Muzzle brake?
Post by: DJokr on November 18, 2009, 08:03:32 PM

What has to be done to replace the barrel extension with a muzzle break?
Has anyone had it done?

Title: Re: Muzzle break?
Post by: salskov on November 18, 2009, 08:55:24 PM

DJokr -

As I understand it, 58's with detachable muzzle breaks are illegal in the USA because of Federal barrel length restrictions.

Additionally, a Czech made muzzle brake may (and I'm not sure of this) run afoul of 922r.

If a muzzle brake passes the Federal barrel sniff test, it would have to be pemanently

Attached to the barrel.

Whatever.  I would call up Czechpoint and get the down and dirty, or send an email to Our Man Dan,

On the sub-board here.

salskov

ps -  Look up at the lead thread on the VZ58 mother thread here.  It is all about 922r and other good stuff,

and, yes, the muzzle extension is required by 922r.

s

Title: Re: Muzzle break?
Post by: tf34mech on November 18, 2009, 09:07:19 PM

ORF has a US made copy of the muzzle brake.

http://rapidfire.targetweb.net/cgi-bin/store/agora.cgi/agora.cgi?cart_id=5893902.21553 (http://rapidfire.targetweb.net/cgi-bin/store/agora.cgi/agora.cgi?cart_id=5893902.21553)*CR2Vy2&p_id=02195&xm=on&ppinc=big

Title: Re: Muzzle break?
Post by: DJokr on November 18, 2009, 10:22:44 PM

I understand the muzzle breaks must be permanently attached, I just need to know how to remove the extension so I can tell my gunsmith.
Thanks for the link tf34mech.

I checked out the thread and it list the barrel extension ( non US made part) but doesn't say anything about the break.
Thanks salskov

Title: Re: Muzzle break?
Post by: CzechPoint on November 19, 2009, 08:54:59 AM

The muzzle attachment (or muzzle break) is a part counted for 922r.  There are two welds through the muzzle attachment and into the threads of the barrel.  Once the paint is removed on the muzzle attachment, the weld areas will be visible. 

Dan

Title: Re: Muzzle break?
Post by: dusty10 on November 19, 2009, 10:30:29 PM

what everyone already said.  A friendly grammar note.  It's a muzzle brake. Your rifle is not broken.  ;D

Title: Re: Muzzle brake?
Post by: DJokr on November 20, 2009, 06:33:39 AM

Thanks dusty10, on the grammar note, I noticed some web sites spelled it "break" not "brake". :P
Now that I know the extension is welded on, how do I get it off? Do the welds have to be drilled out?

Title: Re: Muzzle brake?
Post by: dusty10 on November 20, 2009, 07:03:41 AM

I am no gunsmith by any means but I think you would need to sand paint off to reveal welds through brake into barrel threads then drill out welds and hopefully the extension would twist off.  Why not just by a new barrel and replace the old one.  Or buy a build kit and build one from the ground up as you like.  Be careful you don't get into any 922r issues.  What does Dan at CZechpoint-USA say about all this?

Title: Re: Muzzle brake?
Post by: CzechPoint on November 20, 2009, 04:19:33 PM

The weld areas need to be carefully removed down to the threads.  A rotary tool with a grinding stone is a good way to do it.  The threads will need to be cleaned up so the new muzzle attachment screws on easily (of course it will have to be permanently attached to avoid illegal SBR issues). 

I would not swap barrels as it is usually extremely difficult to remove the barrel from a D-Technik receiver.  More difficult to remove than from original receivers. 

Dan

Title: Re: Muzzle brake?
Post by: armoredman on November 21, 2009, 01:25:22 AM

I would take that to mean it is extremely well built. :)

Title: Re: Muzzle brake?
Post by: dusty10 on November 21, 2009, 05:37:04 AM

My first inclination was to take a grinder to it but I guess I was assuming he wanted to save the original barrel extension.  And yes, these CZ-USA vz-58's  are built like a tank.  ;D

Title: Re: Muzzle brake?
Post by: CzechPoint on November 21, 2009, 11:24:50 AM

It would be extremely difficult to save the original muzzle attachment.  After you're done, it'll be trashed. 

D-Technik/Czech Small Arms uses a special technique to press the barrels into their receivers - I can't reveal the "secret sauce"  ;)

Dan

Title: Re: Muzzle brake?
Post by: armoredman on November 21, 2009, 04:25:02 PM

Funny! :D

Title: Re: Muzzle brake?
Post by: Nova-Wake on November 21, 2009, 07:15:41 PM

Does modifying your break or site base void the 5 year warranty? To bad there wasn't a shop to install a bayo lug site base in the states after they were imported. Wonder why the Czech army choose a 15 inch barrel if they chose a 16in we would all be happy. A vz58 in the us with lug and removable breaks/ silencers/ hiders mmmm.... vzzzzzzzzzzz  owell cant have it all, still the best and lightest 7.62x39 rifle available, i cant stress how much of a plus it being light is.

Title: Re: Muzzle brake?
Post by: DJokr on November 22, 2009, 07:28:28 AM

I was wondering about the warranty too, if it does then I can wait. It's starting to sound like a pricey modification. :-\

Title: Re: Muzzle brake?
Post by: CzechPoint on November 22, 2009, 10:56:00 AM

This is in regard to changing the front sight base and muzzle attachment:

Anything related to the front sight base, the muzzle attachment, and to the end of the barrel/muzzle will sustain a voided warranty.  If a problem occurs to another part of the rifle, then the warranty will remain in effect. 

Be careful who you choose for a gunsmith to peform your modifications.  I've had a few customers have these modifications go wrong on their rifles.

Dan