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3/13/2010 7:19:53 PM EDT
XCR owners, does the gas tub "under the top rail" rattle or other wise move on your XCR? Everything seems snug down on mine  but there is front and back play, only a few millimeters in the gas tub on my XCR and I was wondering if it was normal?
3/13/2010 9:07:06 PM EDT
[#1]
It is normal. Mine does it as well. I asked the armory and they said it was fine. I have had no issues with my rifle at all.
Long barrel, 18.6", 3x9 Leupold Mark 4 scope.
It likes 64 grain HST rounds the best.
3/13/2010 11:45:32 PM EDT
[#2]
18" barrel?!
3/14/2010 5:53:23 AM EDT
[#3]
Yes mine did rattle also.  I have a 3 minute fix for it though.  Take your barrel off, pull the gas tube,  on the the gas port side with the holes lined vertically squeeze the end of the tube slightly with pliars, hands or vice on the top and bottom of tube to cause a very slight oval shape.  Since the gas tube is not meant to have a tight seal a slight oval shaped end is ok.  Now put everything back together and you will see that the gas tube is rock solid - "no more rattle".

ETA: When you reinstall the tube make sure the holes are facing down.  This way more gas bleeds out of the tube.  If the tube is replaced with holes up "against the solid top rail of the upper" less gas will bleed off increasing the recoil impulse on "all" gas dial settings which will wear out your buffer pad faster.

MadDog
3/14/2010 3:51:02 PM EDT
[#4]
Never had a rattle with mine but I've read of some that do.
3/14/2010 5:36:33 PM EDT
[#5]
All 3 of mine rattle.....but, you can do as MadDogDan suggested or you can actually do it with a slight hit of a rubber mallet (don't crush the tube) if it really bothers you.  Doesn't bother me so I haven't messed with it.

Sean
3/14/2010 7:31:00 PM EDT
[#6]
mine doesn't rattle either.
3/15/2010 10:33:54 AM EDT
[#7]
The tube on my brother's XCR does not move.
3/15/2010 5:58:17 PM EDT
[#8]
Terra built mine very well; It doesn't rattle a bit!

B_S
3/17/2010 1:15:40 PM EDT
[#9]
All 3 of mine have some play, but nothing I have ever worried about.  In normal use I have never heard it rattle.
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