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Posted: 1/3/2012 1:15:00 PM EST
[Last Edit: 1/3/2012 2:22:28 PM EST by Rgrey]
Hello
Im Rebuilding one of my ARs and the FF forearm looks like it ismilled all one piece with the Barrel nut, Ive not come across this before and Ive tried removing it with a strap wrench without success. I thought about loosening it up with a little heat, but of course dont want to warp anything- any suggestions
thanks
Bob




Link Posted: 1/3/2012 1:25:16 PM EST
How about a picture of the tube. What MFG is the upper?
Did you take the gas block/FSB off?
Much more info is needed here.

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Link Posted: 1/3/2012 1:32:32 PM EST
Its a DPMS Upper, gas block and tube have been removed. I will see about a pic I haven't done that before either
Link Posted: 1/3/2012 4:32:25 PM EST
[Last Edit: 1/3/2012 4:36:11 PM EST by Rgrey]
Cant seem to get pics to load
Link Posted: 1/3/2012 8:25:04 PM EST
[Last Edit: 1/3/2012 8:36:39 PM EST by LMTRocks]
Here's the pics





Regarding heat, the AR makes a lot of it. I've never pulled a dpms forearm before, but i'd imagine the tube might be glued on.

http://www.ak47.net/archive/topic.html?b=3&f=4&t=351624
Link Posted: 1/3/2012 8:35:42 PM EST
There is a threaded section about two inches from the rear of the tube(receiver end) Unscrew this portion, the remaining two inches is the barrel nut. Use your armorers wrench to take it off. You may have to heat the forward portion of the tube to take remove it.
Link Posted: 1/4/2012 2:55:05 AM EST
Thanks LMT Rocks for help with the Pics. Im going to work on it some more
Link Posted: 1/4/2012 9:45:36 AM EST
Originally Posted By MTNmyMag:
There is a threaded section about two inches from the rear of the tube(receiver end) Unscrew this portion, the remaining two inches is the barrel nut. Use your armorers wrench to take it off. You may have to heat the forward portion of the tube to take remove it.


Does not look like a 2-piece tube in the OP's pics. Most DPMS FF Tubes are 1-piece. It is aluminum, so use heat from a high-output heat gun or a propane torch in the receiver area of the tube, then use your strap wrench to break it loose. If you don't care to save the FF tube then just use a big-ass pipe wrench. Be sure and properly support the upper receiver when loosening the 1-piece tube so as not to distort or damage your receiver. Also, be sure to remove the gas tube before attempting to loosen the handguard tube.
Link Posted: 1/4/2012 1:35:48 PM EST
Thanks Russ4777, Yep Its definitely not a 2 piece, I will work on it this weekend
Link Posted: 1/5/2012 1:21:01 PM EST
Got it broke loose without any damage -thanks for the input
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