Using a 7.62x51 suppressor for 7.62x39?

[WeedWhacker]

I'm aware the 7.62x39 bullet is slightly larger, but if the suppressor's bore size is a good deal larger than either (0.37 inches, to be exact), then is there any reason why a sound suppressor designed for 7.62x51 can't be used on a 7.62x39 rifle?

 

[Onmilo]

You are out in Vegas.
Contact Tim LaFrance or Smith Enterprise and ask them this question.

 

[Ohen Cepel]

Might be best to get one for 7.62-39 instead, then you know you're good to go. It will be louder when you put 51 through it but better than risking injury/damage/excessive pressure if the fit it too tight the other way around.

 

[ZeroCool]

I'm no expert on the subject...

But I dont see why it wouldnt work. The issue I could see is threading differences and barrel diameter differences. You would probably have to get some some kind of custom adapters made. I can understand why its not recommended, but I think we all do lots of things that arent recommended.

But, dont risk it. If something does go wrong, your gonna be having a bad day.

 

[only1asterisk]

is there any reason why a sound suppressor designed for 7.62x51 can't be used on a 7.62x39 rifle?

Contact the maker of the suppressor you want to use and ask them. 7.62x51 rifles have so much more muzzle pressure, I don't think there is any risk of damage from the much milder 7.62x39. I'd have doubts about anybody that told you there was a problem with the .003" larger bullet clearing the baffles.

David

 

[mp510]

Obviously, it is wise to contact the manufacturer.

Interestingly, not all 7.62x39 has .311 diameter bullets. The South African surplus that was imported a few years ago, and some of the more expensive commercial ammo has .308 diameter bullets.