Gunsmithing Timing muzzle brake off the end of the barrel

[Easy_E]

I've heard of this being done but haven't found any details looking around online for help . The AR15 barrel is .740 OD and 11/16-24 3A threads need .688 so there's not enough shoulder to tighten up on. The brake is a SilencerCo and measuring with a depth gage the back of the brake is square with the end of the threaded hole .

I'm threading in the lathe so I can square up the nose of the barrel and adjust to time the brake is this about all there is to it ? Also it will need to be pinned to end up at 16" in length .

Sorry if I'm over thinking it just wanted some opinions before tearing into it.
Thanks

 

[FisherT&C]

Yeah, you can time it using a squared off muzzle. After the pin and weld it isn't going anywhere, as long as it's all lined up there's no voodoo.

 

[Wannashootit]

I'm thinking you'd need a relief cut on the female threads at the muzzle end of the brake to ensure it can fully seat against the flat muzzle.

 

[Easy_E]

Going to tackle this tonight the brake does have the relief cut in the back already I may need to just skim cut the od of the barrel sonit will clear.

 

[JMGlasgow]

Thunder Beast does this for thin, lightweight barrels. They did 4 of my father in law's rifles that way.

 

[Yondering]

I'm thinking you'd need a relief cut on the female threads at the muzzle end of the brake to ensure it can fully seat against the flat muzzle.

Even easier, just remove a few threads at the muzzle. Same effect either way, but doing it to the male threads is a lot easier.

Incidentally that's also a good way to protect threads from damage as well as to align the parts for threading together, and is used on a lot of bolts for OEM auto manufacturers. That's called a "dog point" on a bolt.

 

[Easy_E]

Even easier, just remove a few threads at the muzzle. Same effect either way, but doing it to the male threads is a lot easier.

Incidentally that's also a good way to protect threads from damage as well as to align the parts for threading together, and is used on a lot of bolts for OEM auto manufacturers. That's called a "dog point" on a bolt.

Got the barrel threaded tonight using the nose of the barrel worked great . Youndering's suggestion is what I had to do that relief cut in the female threads wasn't deep enough to clear . Having .800 in threads looks strange but no one will see them now .
Thanks for the replies !