I'm not sure this is possible.
the only time i shot a robarm gun the barrel was ejected of the action twice while fiering it. REAL confidence builder....
I don't mean to bring you into disrepute, but I question the possibility of this statement. The bolt locks into the barrel extension when the gun is ready to fire. If the barrel came out, why are you not dead from the explosion? Moreover, how did this happen twice? Maybe I am misunderstanding what you said. I would appreciate some clarification.
As for my XCR, it was a super reliable shooter so far with about 400 rounds through it. No fail to fire, feed or extract. No jams. I did have two bullets with pierced primers, so Terra at Robarms said the firing pin hole in the bolt face needed to be chamfered a bit so it wouldn't cut holes in primers when the pressures maxed out. I did it myself in 20 seconds with a Dremel.
As for bolt dying...no way. My extractor is locked in tight when I got it used off of 223Medic. Maybe he did it, but it is good. I do love the rifle. Well built, very simple (my first black gun and field stripping and beyond is so super simple. I found the gun to be very intuitive maintenance wise.) My gas block is flawless. The trigger is heavy and creepy, but will supposedly smooth out significantly as it wears in. However, for those who complain about the trigger, need to remember that he SCAR program wasn't for a benchrest shooter. It was for a combat rifle. Even AR fans always replace the trigger anyways so why is the XCR not allowed a little lattitude. The rifle is damn accurate. Unrestricted is nice for those who aren't near any ranges.
For the money, I would buy another in a heart beat. I'll be getting another one when the .308's come out. The ergonomics are flawless. The design is simple. The construction is robust. Fab QC like with any new production is not 100%, but look at all the complaints coming out of established manufacturers who have been making the same models of rifles for decades. Those who judge the XCR harshly are using a different standard than they do for other rifles.
As for Robinson Armaments, customer service answered all my e-mail's same day with fast friendly and helpful advice. The XCR forums are full of fans as well. Could there be lemons out there? Of course. Just like any other rifle.
I think the critics of the XCR but on a different set of glasses when they judge, because the writing sounds biased to me. I for one am most pleased with the rilfe. In case anyone was wondering it was serial number 12XX. So you would expect a certain settling down period in the fab shop. Mine turned out a winner.