JLS RX4 Outer barrel 14mm Thread and Pitch not quite right

[Asomodai]

Hey all. 

 

Looking for some help. 

 

My JLS RX4 is back from the tech and is performing extremely well. However I just realised that not only does it have a positive thread. It's also not 14mm thread. I cant squeeze on my 14mm+ to 14mm- adapter to use a tracer or silencer. The barrel thread is ever so slightly bigger and only the flash hider that came with it fits. 

 

It could be a different thread pitch, but I cant get accurate enough measurements with my calliper's. 

 

I took my Tavors plastic flash hider and tried putting it on the RX4. it went on, but got a little tight, damaged the thread a tad, Tried RX4 flash hider on Tavor. Went on fine. So I reckon the threads on the barrel are a little messed up.

 

Are there any risk free and relatively tool free ways I can get around this? I was thinking a sacrificial plastic +- 14mm thread adapter that I can screw on and off when needed (And hope it doesn't break). I am finding it hard to find something made out of plastic which isn't expensively 3D printed. Or if someone can recommend a relatively loose threaded metal adapter?

 

I could try and recut with a M14x1 Die and chase the threads down, but I do risk ruining it and I have never done it before. 

 

What do you guys reckon?

Edited February 25, 2022 by Asomodai