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AR15.COM
8/18/2025 8:59:24 PM EDT
I’ve got a head scratcher here.

So, I purchased a used P-07 Suppressor Ready with the factory threaded barrel and taller sights.  Everything I’ve seen online makes me believe the thread pitch is the standard 9mm, 1/2 x 28 pattern.

However, when I try to screw on my YHM Wraith suppressor, which I know for sure has the 1/2 x 28 thread pitch, it doesn’t screw on.  Maybe one thread catches and then it binds where if you put anymore pressure on it, it’s going to strip threads.  

Same when I attempt to take the factory thread protector from the pistol and attempt to screw it on another adapter that the end is 1/2 x 28.

So what do you CZ experts think I’ve got going on here?
8/21/2025 10:06:26 AM EDT
[#1]
Should be 1/2x28 if it's factory. Pics?
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"KAC drip feeds their stockholm-syndrome-customer-base with bland and old products to keep them going with the Rolex company model of business to keep everything scarce and high priced" the_answer_is_42
8/22/2025 12:00:36 AM EDT
[#2]
Quote History
Originally Posted By Blacktoothgrin:
Should be 1/2x28 if it's factory. Pics?
View Quote


I’ll post some pics tomorrow.  The barrel just about has to be factory as it’s serial number matches the slide and frame.
8/22/2025 12:15:06 AM EDT
[Last Edit: Autodog][Edited] [#3]
Get someone with some mechanical skills to check the thread size and pitch. I would bet that if you run a die over the barrel threads and a tap into the suppressor everything would fit correctly if the operator of the tap and die knew what they were doing.

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