I want to replace it with a extended car style flash hider because I hate the amd break thats on it. So is it just welded in place or is it pinned and welded over? I don't want to buy the flash hider if Im not going to be able to get the original break off.

I plan on pinning and arc welding a bead over it to permanently attach the new fh.

Thanks

I carefully filed with a small triangular file on the tack weld spot on my 65 and the whole extension/brake threaded off. I tried to save the original brake, but it was pinned/welded-over and was impossible to remove without disfiguring the brake. So I canned it. I used a Tapco one-piece extension brake with the same design brake and welded it on. It's very important to fit the new attachment if it is supposed to have a certain orientation, by adjusting it so it is threaded on tight exactly when it is clocked correctly. This way it will not vibrate when fired and break the weld. BTW, the extension on an AMD65 with original barrel is required to be 4.25", mimimum. You don't have to try to measure from the muzzle to the barrel shoulder or make any calculations. If the attachment is 4.25" or more in length, and if it's attached according to the rules, you will be legal.

Wow. A CAR style brake! Great idea. Where can you get one threaded 14x1 LH ?

Found one. But it's 5.5" long. Got it ordered from Northern Gun Parts. Sould have it in a few days.