Bushmaster Muzzle brake question

[klondike]

Hello everyone, I have a question about the muzzle brake on my bushmaster carbine. It's a mini-y brake on a Bushmaster M4A3 Carbine, I was wondering if it is possible and/or legal to have it removed and attach a flash suppressor on it. I know it says it is permanently attached but I was wondering if, with some gunsmith work, it could be removed.
Theres a local gunsmith in town that they do alot of custom gunsmithing and they do some good work too. I wanted to check here beforehand though to see if its even possible or legal to do so.

 

[sleeping dog]

Permanently attached? How is that? Pinned? Silver-soldered? Both? It should still be removable by a good gunsmith. If it can't be removed nicely, then the gunsmith probably has a lathe - adios muzzle brake.

Legally it should be fine with a flash spreader, as long as the resulting overall barrel length is still legal (minimum 16", as I recall). If the flash spreader can be removed easily, then I'd make sure the barrel alone is legal length.

Your neighbors at the range will thank you, the flash spreader doesn't send as much noise and blast in their direction as a brake.

Regards.