Muzzle Break

[Bizkitjmd1]

What is the best way to pin a muzzle break on a AR to have it AWB compliant but at the same time be able to take it off when I want to disassemble the rifle completely for cleaning.

 

[wolf223]

http://www.northeastshooters.com/vb...ing-Muzzle-Brake-on-AR?highlight=muzzle+break

 

[atmay]

What is the best way to pin a muzzle break on a AR to have it AWB compliant but at the same time be able to take it off when I want to disassemble the rifle completely for cleaning.

You can't have both. It's either permanently attached, or it's not.

Also, there is no need to take the muzzle device off to clean the rifle.

 

[Supermoto]

Some of the Bushmaster carbon 15 had a brake the attached with a spring loaded, ball detent collar, the muzzle was machined especially for them. They also make a slip on Izzy muzzle brake for crowned barrels

 

[vellnueve]

Some of the Bushmaster carbon 15 had a brake the attached with a spring loaded, ball detent collar, the muzzle was machined especially for them. They also make a slip on Izzy muzzle brake for crowned barrels

Isn't the slip-on brake still permanently attached once installed? I think it needs to be pinned?

 

[atmay]

Isn't the slip-on brake still permanently attached once installed? I think it needs to be pinned?

Most slip-on brakes use a set-screw.

Without threads, it's not an AWB issue, either.

 

[abomb60]

Most slip-on brakes use a set-screw.

Without threads, it's not an AWB issue, either.

Yeah doesn't the AWB specifically state threaded muzzle or flash suppressor? If the muzzle isn't threaded and the muzzle device isn't classifed as a flash suppressor then you should be good to go.

Of course even with a permanently attached muzzle break isn't the barrel still threaded? Must be an ATF ruling that allows for this somewhere.

 

[atmay]

Yeah doesn't the AWB specifically state threaded muzzle or flash suppressor? If the muzzle isn't threaded and the muzzle device isn't classifed as a flash suppressor then you should be good to go.

Of course even with a permanently attached muzzle break isn't the barrel still threaded? Must be an ATF ruling that allows for this somewhere.

Yes, it's either a threaded barrel or flash suppressor. A slip-on brake is neither.

And yes, from a purely technical standpoint, the barrel is still threaded with a permanently attached muzzle device, but the intent and purpose of the law is met by making those threads unusable; there is probably an ATF ruling to that effect.

 

[Kevlar]

...Must be an ATF ruling that allows for this somewhere.

...there is probably an ATF ruling to that effect.

Yes, from the BATFE...

A rifle would not be considered to have a threaded barrel if threads were covered by a muzzle brake which was permanently attached to the barrel by welding or high temperature (1,100 degrees Fahrenheit) silver solder.

http://www.titleii.com/bardwell/atf_letter11.txt

A muzzle device, such as a muzzle brake or barrel extension, which is attached to a barrel by means of welding or high temperature silver solder having a melting point of at least 1,100 degrees Fahrenheit, is considered to be part of the barrel for purposes of measurement. A seam weld extending at least one-half the circumference of the barrel or four equidistant tack welds around the circumference of the barrel are adequate for this purpose.

A firearm having a muzzle brake, cap, or barrel extension permanently attached by those same methods to cover the threads on a barrel, would not be considered to have a threaded muzzle.

http://www.titleii.com/bardwell/atf_letter40.txt

 

[vellnueve]

Most slip-on brakes use a set-screw.

Without threads, it's not an AWB issue, either.

Yep, I forgot all about it. I had considered the Bushmaster Izzy slip-on brake but all I knew about it is that it seemed like a pain in the ass.