CZ 455 Barrel thread size

[FatCatsDad]

Would anyone happen to know the thread size on the muzzle of a CZ455 ?

I have a very dusty short barrel (16½") version missing the thread protector.

Being a European gun I thought it might be a metric size.

I'd just like to be sure before I start searching for one to buy.

 

[mwic98]

Would anyone happen to know the thread size on the muzzle of a CZ455 ?

I have a very dusty short barrel (16½") version missing the thread protector.
View attachment 902772View attachment 902773
Being a European gun I thought it might be a metric size.

I'd just like to be sure before I start searching for one to buy.

My CZ 557 Ann. is a 19mm, but check with these guys, they reply right away : https://cz-usa.com/support/contact/

 

[grauhanen]

1/2 X 28 for 16.5" CZ 455 barrel. See https://cz-usa.com/product/cz-455-a...rfect for quiet plinking, the,1/2”x28 threads.

 

[FatCatsDad]

1/2 X 28 for 16.5" CZ 455 barrel. See https://cz-usa.com/product/cz-455-american-synthetic-suppressor-ready-discontinued-2018/#:~:text=Perfect for quiet plinking, the,1/2”x28 threads.

Great thanks.
No waiting to speak of, good old Amazon.

$18 for a two pack.

 

[barthammer]

Not sure if this affects the 455, but my 457 Varmint has a 1/2-20 thread, which is apparently unique to models sold in Canada despite the CZ site saying it should be 1/2-28.

 

[Meroh]

Not sure if this affects the 455, but my 457 Varmint has a 1/2-20 thread, which is apparently unique to models sold in Canada despite the CZ site saying it should be 1/2-28.

You are correct. If the barrel is marked C-ZUB (like my varmint rifle) it will have the European 1/2-20 thread; if it is marked CZ-USA it will be 1/2-28, this is the North American Standard. Accessories in 1/2-20 are not easy to find; but the thread protector should be. BTW, mine is also stamped with the tread size.

 

[FatCatsDad]

Hmm, maybe I should have waited until the rifle arrived.
It's imported from Europe, so it might be ½-20 thread.

 

[45CAT]

I got a Euro size protector from Nordic

 

[FatCatsDad]

I got a Euro size protector from Nordic

Yup, I screen shotted the item I'll need if it's a ½-20 not ½-28

 

[FatCatsDad]

Yup, I screen shotted the item I'll need if it's a ½-20 not ½-28

Same guy Igot this off, has a bunch of 10-22's from Europe, all threaded .

I'm guessing they all had suppressors on them, being legal there and all.

 

[grauhanen]

When in doubt, measure the thread with a thread gauge. The gauges are affordable and readily available at places such as Amazon.

 

[barthammer]

You are correct. If the barrel is marked C-ZUB (like my varmint rifle) it will have the European 1/2-20 thread; if it is marked CZ-USA it will be 1/2-28, this is the North American Standard. Accessories in 1/2-20 are not easy to find; but the thread protector should be. BTW, mine is also stamped with the tread size.

Ha I should have actually checked more closely for the stamp.... mine definitely has it. I ended up finding out the hard way when I ordered a 1/2-28 accessory and it didn't fit!

 

[Meroh]

Ha I should have actually checked more closely for the stamp.... mine definitely has it. I ended up finding out the hard way when I ordered a 1/2-28 accessory and it didn't fit!

Chock it up to lessons learned. A year ago I would have thought Metric and Imperial; who knew. I wanted to put a CZ muzzle break/compensator. I hunted for months until a very kind member gave me a lead to a dealer out west. It really makes the gun look finished. There are those that claim it stripps turbulient gas away from the bullet at the muzzle; I don't know about that, but there were zero negative effects, and it looks good.