Stripped muzzle brake

Rating - 100%
55   0   0
Joined
Mar 26, 2013
Messages
618
Likes
201
Hi guys, I was removing my front sight and went to remove the muzzle brake, it took a lot of muscle to get it to budge, now it looks like the threads are stripped and the brake is just hanging there.

If I yank it off, can I have a new one welded and pinned even though the threads are stripped?uploadfromtaptalk1429364475616.jpg
 

sgeary

NES Member
Rating - 100%
42   0   0
Joined
Jan 28, 2013
Messages
2,528
Likes
831
Those threads are ****ed. Best option is to get the barrel cut and threaded, I know 1776 Gunsmithing in Walpole will do it. Just out of curiosity, was that pinned and welded before you tried taking off the brake?

Cut down the barrel to 14.5 and throw a Lantac Dragon Brake on it!
 

enbloc

NES Life Member
NES Member
Rating - 100%
43   0   0
Joined
Sep 10, 2009
Messages
37,640
Likes
67,809
Silver soldered? Needed torch to melt solder first if it was.
Clean off solder, re-tap threads, check engagement with new device, pin and weld.
 
Last edited:

sgeary

NES Member
Rating - 100%
42   0   0
Joined
Jan 28, 2013
Messages
2,528
Likes
831
Silver soldered? Needed torch to melt solder fires if it was.
Clean off solder, re-tap threads, check engagement with new device, pin and weld.

Now looking after magnifying the image it looks like that is what it is.
 

Sweeney

NES Member
Rating - 100%
24   0   0
Joined
Feb 10, 2011
Messages
3,609
Likes
4,306
Location
Oort Cloud
It looks like it had been pinned and welded due to the discoloration on the shoulder of the brake and the tearing out of the barrel threads. Confirm this then drill out the pin. You might be able to save the brake.

The barrel will need to be cut and threaded OR, rebuilt with weld, turned and threaded. Pullman arms has a photo on their sight of just such a weld job.

If the barrel is chrome lined the best bet is to have it welded. Cutting will promote chipping/flaking of the chrome at the cut.
 
Last edited:
Rating - 100%
11   0   0
Joined
Mar 1, 2009
Messages
7,363
Likes
3,782
Location
Deep in the woods of SC
Now I can't get get break off, it's just spinning at the end of the barrel.

A bunch of the silver and the threads have been pushed toward the end of the barrel and mashed together. Now the brake is sitting in a valley with the barrel on one side and a ridge of metal on the other.

What does it look like if you look in the brake? If you can see the ridge of metal you may be able to use a dremel to cut it down enough to slip the brake off. If not then it has to be cut in the valley, behind the break, and hopefully pushed out through the break. Then, as the others have said, the barrel will need to be cut and re-threaded. Or have a target crown cut, if you don't care about having a MD.
 
Rating - 100%
1   0   0
Joined
Jan 25, 2013
Messages
146
Likes
6
Location
Port Angeles,Wash
Are you sure you were turning it the proper direction, some brakes have a left hand thread, means you need to
turn it clockwise to remove it. Just a thought!

.......................... Jack
 
Last edited:
Rating - 100%
55   0   0
Joined
Mar 26, 2013
Messages
618
Likes
201
I'm going to secure the brake and cut it off, I'll bring it back to the shop that I bought it from and ask why it didn't display that the brake was welded
 
Rating - 100%
19   0   0
Joined
Apr 21, 2006
Messages
3,075
Likes
430
Maybe the seller was just being overly cautious by massifying the barrel.

But to be perfectly honest, you should have known something was up long before you got to where you did. If you had stopped and figured out why the MD was not loosening after the first turn or so, you could have saved the threads. Sometimes just muscling something is not the answer.
 

enbloc

NES Life Member
NES Member
Rating - 100%
43   0   0
Joined
Sep 10, 2009
Messages
37,640
Likes
67,809
Silver solder is legal if meltpoint is above 1100 degrees F.

https://www.atf.gov/files/publications/download/p/atf-p-5320-8/atf-p-5320-8-chapter-2.pdf

The ATF procedure for measuring barrel length is to measure from the closed bolt (or breech-face) to
the furthermost end of the barrel or permanently attached muzzle device. Permanent methods of
attachment include full-fusion gas or electric steel-seam welding, high-temperature (1100°F) silver
soldering, or blind pinning with the pin head welded over.
Barrels are measured by inserting a dowel rod
into the barrel until the rod stops against the bolt or breech-face. The rod is then marked at the
furthermost end of the barrel or permanently attached muzzle device, withdrawn from the barrel, and
measured.
 
Rating - 100%
11   0   0
Joined
Mar 1, 2009
Messages
7,363
Likes
3,782
Location
Deep in the woods of SC
Maybe the seller was just being overly cautious by massifying the barrel.

But to be perfectly honest, you should have known something was up long before you got to where you did. If you had stopped and figured out why the MD was not loosening after the first turn or so, you could have saved the threads. Sometimes just muscling something is not the answer.

The irony being, the propane torch in the background of the pic.
 
Rating - 100%
55   0   0
Joined
Mar 26, 2013
Messages
618
Likes
201
Maybe the seller was just being overly cautious by massifying the barrel.

But to be perfectly honest, you should have known something was up long before you got to where you did. If you had stopped and figured out why the MD was not loosening after the first turn or so, you could have saved the threads. Sometimes just muscling something is not the answer.

Yes, True... I kept cranking that MD knowing that something was wrong. Looking back, I would have simply brought it to a pro and asked them how to remove it, since I couldn't get it off easily. It doesn't appear to be a total loss, if I can get the tip re-threaded.
 
Rating - 100%
55   0   0
Joined
Mar 26, 2013
Messages
618
Likes
201
Well, I got the brake off, but cut into the barrel a bit, it likely won't matter now, as the threads are ruined. Anyone know what my options are?uploadfromtaptalk1429479286907.jpguploadfromtaptalk1429479326558.jpg
 

warwickben

bubba Kalashnikov
Rating - 100%
4   0   0
Joined
May 30, 2012
Messages
20,009
Likes
2,794
Location
Kyben pass (tewksbury ma)
Well, I got the brake off, but cut into the barrel a bit, it likely won't matter now, as the threads are ruined. Anyone know what my options are?View attachment 134959View attachment 134961

Cut off single point thread recrown, pin extended muzzle device .
Or have it turned , recrowned and have a press on muzzle device made.
Or have a threaded sleeve installed .
 
Top Bottom