Corpsie
03-06-2005, 01:52 PM
Here's the HOW TO about removing the muzzle brake (http://www.aoe.vt.edu/~jchock/Armalite%20MB%20removal.pdf)
Warning: Not all pins are drilled across the threads of the barrel. Mine was drilled slightly inward so there was no way I could have machined the other side of the muzzle brake.
Here's what I had to do
1. Cut off the peel washers. I used a hacksaw and just sawed all around it until I could poke them out.
2. Grind down the side of the brake which houses the pin. It was necessary to grind really far down, as in almost to the threads.
3. Twist the muzzle brake tighter (which is why the crush washers had to be removed) and then loose. It is typical right hand threading. At this point the pin will either be forced out of the muzzle brake where you have been grinding or it won't. DON'T USE EXCESSIVE AMOUNTS OF FORCE. Exam the area where the pin is. Look to see if you can see anything attempting to burst through.
4. Repeat steps 2 and 3. Take your time and eventually that pin will pop through surface and the brake will come off easily.
Warning: Not all pins are drilled across the threads of the barrel. Mine was drilled slightly inward so there was no way I could have machined the other side of the muzzle brake.
Here's what I had to do
1. Cut off the peel washers. I used a hacksaw and just sawed all around it until I could poke them out.
2. Grind down the side of the brake which houses the pin. It was necessary to grind really far down, as in almost to the threads.
3. Twist the muzzle brake tighter (which is why the crush washers had to be removed) and then loose. It is typical right hand threading. At this point the pin will either be forced out of the muzzle brake where you have been grinding or it won't. DON'T USE EXCESSIVE AMOUNTS OF FORCE. Exam the area where the pin is. Look to see if you can see anything attempting to burst through.
4. Repeat steps 2 and 3. Take your time and eventually that pin will pop through surface and the brake will come off easily.