Interesting video for the XCR owners

MosinNagantM44 said:
I found this video on youtube
http://www.youtube.com/watch?v=fithqNNTa0Y
Should i be worried about it ? Why did it happened ? I think he said his barrel were out of spec but i am not too sure about that.
Click to expand...

yeap, the guy in the video just had the worst luck with that particular rifle, it had more than one out of spec issues. it was one the rifles that was made prior to RA fixed their quality control issue (fired the idiot that made all the mistakes), there haven't been any other reports on the same issue.

with 1000 rounds of .223 and 400 rounds of surplus 7.62X39 down the range without any problems with mine other than the dumbass pulling the trigger :redface:
 
It's a MonsterMan grip, a California thing where if you have drop free mags you can't have a pistol grip, bayo lug, thumbhole stock, or a bunch of other things (carry handle?), as having more then one of the evil features turns your rifle into an illegal baby-killing assault gun of death.

Now, in the youtube comments the poster mentions that his barrel had a gas port that was basically twice the spec diameter (4 times the spec area, since we deal with pi*r^2 formula). That meant that more gas was getting into the gas system, gas was hotter, so not only was it cycling hard, but excess hot gas was contributing to the warping.

So that's why the barrel needed to be replaced.

Now, he mentions in comments that he replaced a couple of gas valves before he got the barrel replaced. To me that sounds like it wasn't the valve and indeed it was the barrel that was at fault.

*shrug* Just a semi-educated guess.
 
This can also happen if you don't clean the gas system. It binds like he shows. Take it apart, use some solvent, wire brush, solvent, wipe, oil and you're good to go.
 
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