What size thread is on the impact?

Anyone know thread size on the impact?

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If you remove that shroud completely exposing the fitting holding the Smooth Twist X liner in position you will find that a 1/2-20 UNF threaded moderator will spin right on and work just as well at no additional cost!

Yes, But the looks .....
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Actually I like it and have seen Matt Dubber do the same in the past. I do the same thing on my Wildcat MK II Compact. To each his own though! :)

I do plan, however, to put a 20 mm X 18 mm piece of Twill Carbon Fiber Tube of appropriate length over mine after putting on a couple of o-rings to hold the tube concentric around the barrel liner "housing"! I am using a Hugget Belita currently.