JB weld MB

[texengland]

Picked up an SAR 2 a while back. already replaced the stocks and refinished the rifle, but the guy that had it before me took one of the 14x24 adapters and JB'ed to the end of the muzzle. It is really tight because it is pretty much filled with JB weld.I put a brake on it and everything lines up alright, but I have yet to shoot it. Do you think I should solder the brake and forget about it,or try and take it off and get the right size? I'll try and post a pic later.

[Warthog]

I would remove it myself and redo it right. JB weld is fine for a lot of things but I wouldn't leave it on the end of my barrel. Who knows what will happen. It may look all lined up but if it is off by a hair and it catches a bullet, you will have a bad range day.

[Packrat]

If the brake actually works, there's a LOT of thrust on it when you fire. You may have to go retrieve it even it it doesn't catch a bullet. I've not had that much luck with JB Weld. Is the adapter legal with JB Weld?

[Tomac]

I have 2 SAR-2s that sport the AA-OK setscrew AK-74 muzzle brakes secured w/JB Weld (the original, not the quickset) and appx 4K rds later they're both still on tight.
Tomac

[torque65]

I don't think I'd trust JB Weld alone.
BUT, I've made MB's, bored the ID for a light press fit (.003" undersize), and used green Loctite (680) as a lubricant / fixative. They're still on, after many, many rounds. Got to use the Loctite primer if you want THAT kind of permanance.
Don't know if it's exactly legal, but you need a torch and a set of vise-grips to remove the MB, same as silver solder. Likely you will destroy the brake, too.

[texengland]

I tried beating it off with a hammer with no luck, then shot about 90 rnds. through it with the brake, but it didn't budge. Any ideas?

[Packrat]

Sounds like it's getting to be more trouble than it's worth. I'd leave it and shoot as-is. If it comes off later, you can make your changes to it.

[avatarhammer]

I agree with Packrat, shoot it until it blows off (you may have a really long wait). If you really want it off, take a propane torch to it. You should then be able to remove it (done it many times myself -- it works).

[avatarhammer]

As to the legality of 24mm threads -- The brake should be permanently attached -- BATFE (if they really cared -- illegal machine guns are a higher priority than the possibility of threads under your MB) would probably consider your barrel to be threaded to accept flash suppressor, planet killer etc... 22mm is the only tpi that dosen't have associated FH's.

[texengland]

I was kind of thinking along those same lines and went ahead and soldered it onto the adapter. So I'll just wait and see what happens.