Muzzle brake won’t fit snug to barrel

fozzy · March 6, 2012, 02:53 PM

I’m restoring a Norinco NHM-91.

I replaced the missing muzzle brake detent and spring.

I have slant (47) and 74 style brakes.

No matter where I start screwing the brakes on, there is a gap between the brake and barrel (I have to back the brake off to engage the detent).

There do seem to be fixed places where the starting threads engage each other preventing a closer final fit.

Is this normal?

How do I minimize the brake-barrel gap?

Thx,

Carne Frio · March 7, 2012, 12:11 PM

1. It's normal.
2. You can remove small amounts of metal
from the muzzle brake, until it fits flush.

fozzy · March 9, 2012, 06:51 AM

Great, Thank you.

I’ve got just a pinch of oxpho blue left if any white metal peaks through.

March 6, 2012, 02:53 PM	#1
fozzy Junior Member Join Date: February 18, 2012 Posts: 8	Muzzle brake won’t fit snug to barrel I’m restoring a Norinco NHM-91. I replaced the missing muzzle brake detent and spring. I have slant (47) and 74 style brakes. No matter where I start screwing the brakes on, there is a gap between the brake and barrel (I have to back the brake off to engage the detent). There do seem to be fixed places where the starting threads engage each other preventing a closer final fit. Is this normal? How do I minimize the brake-barrel gap? Thx,

March 7, 2012, 12:11 PM	#2
Carne Frio Senior Member Join Date: August 28, 2008 Location: Near Fairbanks Alaska Posts: 829	1. It's normal. 2. You can remove small amounts of metal from the muzzle brake, until it fits flush.

March 9, 2012, 06:51 AM	#3
fozzy Junior Member Join Date: February 18, 2012 Posts: 8	Great, Thank you. I’ve got just a pinch of oxpho blue left if any white metal peaks through.