Gunsmithing How to Get a Suppressor to Stay On Tight

[scotharr]

Hi all,

I had a sloppy(loose) threading job done on my barrel and now the suppressor comes loose during a string of fire (20 or more shots). Are there any good ways to get the suppressor to stay on better? One suggestion was blue loctite.

 

[Mark Housel]

Re: How to Get a Suppressor to Stay On Tight

Can you find a wave washer of the proper size?
Or even a fiber washer that will give you some additional friction?

 

[jonaddis84]

Re: How to Get a Suppressor to Stay On Tight

First page of the suppressor section not even half way down...

http://snipershide.com/forum/ubbthreads.php?ubb=showflat&Number=2691319#Post2691319

And if you like the baffles in your can, dont use ANY kind of washer unless you verify with a mic that it is 100% identical thickness all the way around. And even then, the concensus is just dont do it.

 

[Mark Housel]

Re: How to Get a Suppressor to Stay On Tight

So with enough slop in the threads that a few 10ths difference in washer thickness you can get baffle strikes?

But, just having the suppressor loosen up on those same sloppy threads the only problem is that it is loose?

Seems a stretch, but I don't personally own a suppressor so...I truly can't say based on experience.

Sorry if a washer is inappropriate advice.

 

[Goin'Hot]

Re: How to Get a Suppressor to Stay On Tight

Have the barrel rethreaded.

 

[scotharr]

Re: How to Get a Suppressor to Stay On Tight

Thanks guys. I'm gonna try the teflon, but suspect it will just burn off....have to do some research on heat tolerance. The Nord-lock looks very interesting and I suspect the sloppy threads coming loose mis-aligns things more than any washer will.

 

[jonaddis84]

Re: How to Get a Suppressor to Stay On Tight

The problem is the threads have little to do with its alignment, the shoulder is what keeps the baffle bore path parallel with the barrel bore. Its most likely not going to cause issues, especially if the suppressor has a large bore diameter. But if the can is 8.5" long and you cock the one end of it by a
few thou with a non-flat washer, you can possibly run into issues.

I agree, the best thing to do is re-thread the barrel, but you still may run into issues with it loosening.

 

[Firemarshall27]

Re: How to Get a Suppressor to Stay On Tight

http://www.snipershide.com/forum/ubbthre...484#Post2694484

 

[scotharr]

Re: How to Get a Suppressor to Stay On Tight

Well, the Nord-locks did not work for me: they would not get enough grip on the barrel. The barrel is only .72" wide and did not provide enough surface for the rings to grip.

On a positive note, I put a dab of loctite 567 and it worked great: nice solid bond that did not break down after 140 rounds. With a little extra effort I could still get the suppressor off afterwards.

Rocksett was the recommended solution by the suppressor manufacturer. But, I had the high-temp loctite on hand and that worked as well.