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Old February 14, 2013, 10:10 PM   #1
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are suppressor threads universal from brand to brand?

Are suppressor threads universal from brand to brand (within a given caliber)? For example, would the threads on a Walther P22 adapter be the same as the threads on Tactical Solutions barrels (both being 22lr) and therefore be able to use the same suppressors/muzzle attachments?
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Old February 14, 2013, 10:18 PM   #2
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Some configurations may be popular, but there's no "standard". The threaded portions of barrels may differ in diameter, thread pitch, and even whether they have left- or right-handed threads.

EDIT - I think the TacSol barrels are threaded 1/2" by 28 threads per inch, which is fairly common, although not enough so to be called "standard".

The threaded portion of the Walther P22 barrel is 8.0mm X .75 mm per thread, but there are adaptors available for it that will let you mount a 1/2" X 28 TPI suppressor.

Last edited by ScottRiqui; February 14, 2013 at 10:39 PM.
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Old February 14, 2013, 10:35 PM   #3
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While there's no real "standard" most calibers use the same threads (with some exceptions. For example, all of the .22's I've seen are 1/2x28 as well as 9mm Glock's and M&P's. However- some of the other brands in the same caliber will use LH threads or a 3-lug mount.

However, most suppressor companies offer pistons in several different thread pitches. That way you can have a .45 can and to run it on a 9mm gun all you have to do is swap the piston to the one with the correct pitch.

To answer your question a little more directly, I have the Gemtech thread adapter that fits walther p22's and the M&P .22. Pretty sure that's what you're talking about and it's 1/2x28. MOST (if not all) dedicated 22 long rifle cans will work on that.

Edit to add:
From TacSol's website:
"Available with or without flutes in a standard barrel or threaded end barrel** in ½” x 28 TPI."

Check out this link:

MANY rimfire suppressors, all of which are 1/2x28.

Hope that all helps.
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Old February 26, 2013, 11:47 AM   #4
Join Date: February 26, 2013
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Some suppressors index off of the muzzle, and some index off of the 'shoulder', so it's pretty important to check with the manufacturer to make sure they'll play well together.

Some calibers tend to have standard sizes, but not always. 5.56, .22 and 9mm are often 1/2 x 28, but not always. .30 cal is often 5/8x24, but not always.
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