Is this barrel threaded and what is the thread pitch if so? I've searched all of the internet to figure this out and can't get an answer. It seems the European versions of the 457(including LUX) are thread with 1/2-20. But can't get an answer on threaded barrel sets or models of the 457 in the US

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James G. · Answer

Hi Nicholas and welcome. I would contact CZ-USA Customer Service for accurate information at Toll Free: 1-800-955-4486 or 
Phone: (913) 321-1811 Ext. 4701 Monday – Friday
9:00am – 4:00pm CST. Cheers and stay safe!

Randy I. · Answer

I suggest you contact CZ-USA Customer Service for accurate information at Toll Free: 1-800-955-4486 or
Phone: (913) 321-1811 Ext. 4701 Monday – Friday
9:00am – 4:00pm CST.

Ed C. · Answer

Hi Nicholas, I would contact CZ-USA Customer Service for accurate information at 1-800-955-4486 or (913) 321-1811 Ext. 4701 Monday – Friday 9:00am – 4:00pm CST. 
Stay safe & have a great day!

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