KA M4 Barrel Nut Help

Eeyore · March 29th, 2012, 21:02

I'm trying to remove the barrel nut off of a KA M4. The thing won't budge, I'm using an armorers wrench and still nothing. Anyone else have this issue? Is the thing glued on or something.

HKGhost · March 29th, 2012, 21:07

Add some oil into the threads and pop it into the freezer over night. Or for a few hours if you're in a rush. If that still won't work. Use a heat gun and heat it for a few minutes and try again. Only heat the barrel nut.

Amos · March 29th, 2012, 21:07

Talk a soldering iron, crank it to full and hold it on the barrel nut for a good while and get it nice and hot.. IIRC, there's locktite involved on KA nuts

Or a propane torch.. but take out your inner barrel + hop, all plastic pieces in the upper receiver and any small metal springs

Ghostnote · March 29th, 2012, 21:22

On mine (and one other one I saw), there are shims between the receiver and barrel nut and they got twisted up into the threads of the barrel nut. This may be the case. I ended up dremmeling off the delta ring.

As far as I know, king arms does not put loctite on their nuts. I have only taken apart 4 of them though. Its probably better to try the heating/cooling suggestions first.

SultanOfShwing · March 29th, 2012, 21:43

For me it took securing the upper using the barrel in a vice. Then 1 person holding the barrel steady while another person torqued the nut using pliers and two hands. Barrel got a little mangled during the operation

Carlito564 · March 30th, 2012, 01:01

I broke my receiver trying to take the damn thing off. I even used a vice and a pipe wrench but still it didn't budge until my receiver snapped.

Kozzie · March 30th, 2012, 15:04

Are these things CW threaded or CCW.

m102404 · March 30th, 2012, 15:47

All delta rings are "normal"...righty tighty/lefty loosey.

XZIVR · March 30th, 2012, 19:02

On my KA there was no loctite or anything, it was just very effing tight. Used the proper AR tool with the upper clamped in a vice, and it started to twist the upper before the nut would budge. I hit it with the heat gun on full blast, didn't help. Pounded on the wrench.. nothing. In the end I had to cut the damn thing off. Luckily AirsoftParts carries replacements.

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March 29th, 2012, 21:07	#2
HKGhost Trader rating Join Date: Nov 2009 Location: Mississauga, ON	Add some oil into the threads and pop it into the freezer over night. Or for a few hours if you're in a rush. If that still won't work. Use a heat gun and heat it for a few minutes and try again. Only heat the barrel nut. __________________ Please email me as I'm not on ASC too often. Custom Build \| Upgrades \| Repairs \| Maintenance Contact: ghostgunwork@gmail.com / Private Message

March 29th, 2012, 21:07	#3
Amos Trader rating Join Date: Aug 2006 Location: Japan	Talk a soldering iron, crank it to full and hold it on the barrel nut for a good while and get it nice and hot.. IIRC, there's locktite involved on KA nuts Or a propane torch.. but take out your inner barrel + hop, all plastic pieces in the upper receiver and any small metal springs __________________ Custom Builds: FA3674U Krinkov G3SD6

March 29th, 2012, 21:43	#5
SultanOfShwing Trader rating Join Date: Jan 2009 Location: Surrey, BC	For me it took securing the upper using the barrel in a vice. Then 1 person holding the barrel steady while another person torqued the nut using pliers and two hands. Barrel got a little mangled during the operation __________________

March 29th, 2012, 21:22	#4
Ghostnote Trader rating Join Date: Feb 2010 Location: Markham	On mine (and one other one I saw), there are shims between the receiver and barrel nut and they got twisted up into the threads of the barrel nut. This may be the case. I ended up dremmeling off the delta ring. As far as I know, king arms does not put loctite on their nuts. I have only taken apart 4 of them though. Its probably better to try the heating/cooling suggestions first.

March 30th, 2012, 01:01	#6
Carlito564 Trader rating Join Date: Sep 2010 Location: Sudbury, Ontario	I broke my receiver trying to take the damn thing off. I even used a vice and a pipe wrench but still it didn't budge until my receiver snapped. __________________ Molon Labe

March 30th, 2012, 15:04	#7
Kozzie a.k.a. Greedy Trader rating Join Date: Dec 2010 Location: Toronto	Are these things CW threaded or CCW.

March 30th, 2012, 15:47	#8
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	All delta rings are "normal"...righty tighty/lefty loosey.

March 30th, 2012, 19:02	#9
XZIVR Trader rating Join Date: Mar 2011 Location: Calgary, AB	On my KA there was no loctite or anything, it was just very effing tight. Used the proper AR tool with the upper clamped in a vice, and it started to twist the upper before the nut would budge. I hit it with the heat gun on full blast, didn't help. Pounded on the wrench.. nothing. In the end I had to cut the damn thing off. Luckily AirsoftParts carries replacements.

KA M4 Barrel Nut Help

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