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4/25/2005 7:21:22 PM EDT
Sorry if this has been covered before. I don't frequent this section of the board very often.
I have a Bushmaster V-Match that has a float tube on it. I want to remove it, but don't know how.
Same goes for my little 7" Model 1 pistol upper: float tube and I want to remove it.

I actually tried to get the Bushmaster apart. I found that the float tube is in two pieces. The first piece easily unscrews from the other. The other of course, is screwed into the upper receiver, I guess. Only, if that is the case, why can't I unscrew it ?
4/25/2005 7:59:14 PM EDT
[#1]
Take your gas tube out.
4/25/2005 9:50:16 PM EDT
[#2]
I guess I didn't make myself clear.
I took the gas tube off. I took the gas block off. I took off the front of the tube. BUT, there remians a piece of the tube that is a few inches long. You can't get a barrel wrench in there. Either there is a special barrel wrench for this situation, or there is a way to get the remainder of the tube off.

I tried to just unscrew the rest of the tube using a strap wrench and then covered the tube with leather and used a pipe wrench. It doesn't budge.
I have taken barrels off uppers before and it doesn't take a whole lot of force. This doesn't move with all my might: I can bench press 280.
4/26/2005 7:09:14 AM EDT
[#3]

Quoted:
(Copied from my post to the thread in BIY)

(* The aluminum receiver under the barrel nut will expand more quickly than the steel barrel nut so applying heat can actually make it tighter, not looser.  Keep the aluminum in the bucket (of ice)and apply heat to the barrel nut so that the aluminum should contract a little while the steel nut expands.  Move very quickly to wrench it because the aluminum will be absorbing heat from the barrel nut and start to expand.)


Maybe Loctite? You'll need heat if so. Try this first, copied from the troubleshooting forum.
4/26/2005 4:46:24 PM EDT
[#4]
Ok, I called Bushmaster today and he said to use a strap wrench. I told him that I already tried that, I even tried a pipe wrench. He said, well it is just screwed on there; no trick to it. It might be loctited on there, but it will unscrew.
I actually started to try heating the barrel. In fact I did heat the barrel but decided that I must be doing something wrong and never tried to get it off after I applied the heat.
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