For those of you who own the Threaded Barrel ones and use a suppressor.

Do you use the Crash Washer between the suppressor and the barrel end or not?

Please elaborate why yes or not in either case.

Thanks

I don't normaly just because the shoulder is what aligns the suppressor to the barrel.. by placing anything in between those mating surfaces you increase the chances of a baffle strike... but I'm sure some one will say they have been using one for years with a crush wash because it helps it from backing off... its your can id call the manuf. and ask them what they recommend

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07/SOT2
NRA Instructor

The suppressor contacts straight to the barrel for best alignment

No washer.

The washer could cause a buffle strike.

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NRA Benefactor Member

I don't use a crush washer because YHM says it will void the warranty if I do and that's good enough for me!

Don't worry about it backing off...If you screw it on tight enough it wont back off.

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Air Assault!

That doesn't sound good at all.... cuz I ordered a YHM Wraith for use on my 15-22 and Sig 522. Both have barrel threads that are cut .625 long. The Wraith has a threaded depth of only .475.

The manfacture will say not to use a crush washer but as ChattanoogaPhil says some barrels are threaded too long
My Nordic NC22 is threaded for 5/8 and must use a washer. Alignment is perfect


Reguardless if you use a washer or not, you should always remove the bolt and look down the bore.
If it doesn't look right(shadow or whatnot) you should have a gunsmith that's familar with suppressors take a look at it

If the shoulder is square and the bore is concentric it will not make any difference whether or not a washer is used

I have store bought and several Form 1's(homemade) and have had not trouble with the washer/no washer issue on several different firearms

Disclaimer:
My experience only has been with rimfires