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How to remove pinned on brake?
8/31/2010 7:31:36 AM
I just received a used XM15A4 in a trade. It is the AWB compliant version with a muzzle brake with a pin across the bottom. I am in Ohio, so this is not a legal issue for me. If I knock the pin out is the comp threaded on or is it a press fit? I have a barrel vise, but figured I'd ask before scratching the barrel up.
8/31/2010 9:10:46 AM
There are two pins holding the break on. 12 and 6 o'clock. You'll need to cut into the flash hider and remove as much material around the pins as you can until you can pull them out. With any luck, the comp will then screw off. Be sure to have a thread chaser standing by. Not a perfect method,by any means. They really did fix them to be permanent...
8/31/2010 9:34:27 AM
Originally Posted By Mscott:
I just received a used XM15A4 in a trade. It is the AWB compliant version with a muzzle brake with a pin across the bottom. I am in Ohio, so this is not a legal issue for me. If I knock the pin out is the comp threaded on or is it a press fit? I have a barrel vise, but figured I'd ask before scratching the barrel up.
I just received a used XM15A4 in a trade. It is the AWB compliant version with a muzzle brake with a pin across the bottom. I am in Ohio, so this is not a legal issue for me. If I knock the pin out is the comp threaded on or is it a press fit? I have a barrel vise, but figured I'd ask before scratching the barrel up.
If this is what I'm thinking it is... the cross pin is visible, correct?
If it is, then all you have to do is knock it out and beat the muzzle brake off. Those were pressed on and are not threaded underneath.
8/31/2010 2:36:06 PM
Send to ATF for testing
Hide dog
Pre-soak floor boards and carpet in gasoline
Buy marshmallows and hot dogs
Place head between legs
Kiss your ass goodbye
Hide dog
Pre-soak floor boards and carpet in gasoline
Buy marshmallows and hot dogs
Place head between legs
Kiss your ass goodbye
8/31/2010 4:09:58 PM
Yes, it just has a pin on the bottom. If it isn't threaded then I'll leave the brake on. I was just thinking of changing it.
What have you been smoking, Maryland...........
What have you been smoking, Maryland...........
8/31/2010 4:16:25 PM
No it is NOT threaded underneath. 
8/31/2010 5:53:00 PM
We just removed a brake off one and it was threaded but the pin was not straight in at 6 o'clock, it went in there but was at an angle.
9/1/2010 9:47:39 AM
If you have a pinned and welded muzzle brake you'll see a faint light 3/8 inch circle at the six o'clock position of the muzzle brake. The pin is angled and it will be threaded underneath.
If it’s pressed and pinned (1 or 2 outward pins running through the MB) then this can be removed but there's no threads underneath.
Tim
If it’s pressed and pinned (1 or 2 outward pins running through the MB) then this can be removed but there's no threads underneath.
Tim
