stubborn 6.8/5.56 gas block adapter

[aeropilot4fun]

It only hangs with there's brass in it. While it doesn't hang without brass, it does snag and is far from being a smooth as with my 5.56 innards. My 5.56 actions are super smooth - dare I say "silky"? ;-)   I assume that the 6.8 will get like this once its broken in, but the hanging with the brass is an issue I'd like to resolve before I actually pull the trigger on a live 6.8 round.

[bolster]

Ok, safety and trigger reset problem fixed. Seems that whomever put the grip on had the spring NOT QUITE positioned correctly. Easily rectified. The trigger reset was resolved with 5 seconds of filing to remove a "tail" on the hammer that the disconnect was hanging up on, keeping the trigger from being reset.

That leaves two issues : cartridges being stuck and the muzzle device being off center. For the latter, I re-seated the barrel per some of the observations, and while it is more in-line, its still about 5 degrees off vertical. When the barrel is out of the gun, you can plainly see it.

Back to the main issue - chamber a round (yes, its inert) and then cycle the action and the bolt rotates to come out, and then jams.

Another observation - the barrel is SUPER MEGA tight in the gun. Ie. I need a mallet to properly seat it, and also a mallet and tool to remove it. My 5.56 barrels easily slide in/out on ALL my XCR's, but the 6.8 barrel is tight to the point of almost not fitting into the gun at all. Could this be attributing to the issue with the stuck round?

When you say the muzzle device is off-center, do you mean to say it is not concentric with the barrel, or that it is not tightened so as to have the top of it facing up?

[aeropilot4fun]

Top is not centered. Its fine in terms of barrel axis for bullet path exit, but its over tightened on the threading about 10 degrees. Nothing detrimental to the operation of the rifle, but a cosmetic quality of work thing on a beautiful rifle.

[bolster]

Top is not centered. Its fine in terms of barrel axis for bullet path exit, but its over tightened on the threading about 10 degrees. Nothing detrimental to the operation of the rifle, but a cosmetic quality of work thing on a beautiful rifle.

Luckily, a wrench will fix that issue quickly. As for your other problem, I would check the ejector to make sure it has not come loose, and that it is aligned so the bolt passes without interference, as this might be what's causing it to hang up.  The extractor may also be a problem, as someone else mentioned.

[aeropilot4fun]

The 6.8 is still sticking big time, and every trigger pull the rifle is popping apart. The quick disconnect isn't keeping the rifle together even when I switch back to 5.56. Any suggestions?

[DSM]

The 6.8 is still sticking big time, and every trigger pull the rifle is popping apart. The quick disconnect isn't keeping the rifle together even when I switch back to 5.56. Any suggestions?

Give them a call and send it back in.

[aeropilot4fun]

Yup. I'll call tomorrow. Might as well send in the whole upper.

[DSM]

Yup. I'll call tomorrow. Might as well send in the whole upper.

Probably not a bad idea.  Something screwy is going there.  They'll fix you up right though.  No worries.

[bolster]

Any follow-up on this one?

[aeropilot4fun]

Any follow-up on this one?

Terra has the rifle. I'll let you know when I get it back.

[aeropilot4fun]

Ok, talked to Terra yesterday while I was departing Vegas from the SHOT show.

First, the bad. It was the worst rifle she had ever seen. (her words, not mine)  Not from my abuse, mind you - but I had bought the rifle used and it had some very odd, hidden damage to it which kept the barrel from seating properly among other things. Some of the problems cropped up with the original 5.56 barrel, but I was already chasing down 6.8 issues and didn't connect that the errors might have been there since I received the rifle.

I'll spare you the gory details, but in the end, the upper had to be replaced/rebuilt. She also took the opportunity to upgrade my trigger which I'm very thrilled about as well. Hopefully the test firing of the rifle goes good today and I'll get it back sometime next week.

Hands down, the best customer service I've dealt with in a long while. RobArm not only fixed all that was wrong with the rifle, but also did the trigger upgrade.

I didn't ask for the upgrade, and they didn't have to do it, but they did.

It doesn't get any better than that.

And after meeting Alex at SHOT, I have to say that it comes from the top. I didn't find another more compelling, interesting and technically savvy CEO/President/Owner at the show. (perhaps that's because most owners/CEO's don't work their own booths!) There's a reason RobArm has fanatical customers. In a world of audacious claims, Robinson actually lives it.

Next time I'm in Utah, I'm gonna swing by the offices and bring by some goodies.

Terra, thanks for making my rifle "like new, only better".

To everyone at Robinson. Thanks for a great product.

And to Alex - it was great to connect with you and you've got a heck of a company. Terra has my mailing address and I look forward to testing out that 18.5" .308 soon! 

[XCRmonger]

well, it test fired great today, so... it will be on its way home to you. 

[aeropilot4fun]

well, it test fired great today, so... it will be on its way home to you. 

Thanks again. 

[bolster]

Glad it's getting sorted out.  If you're extra-lucky, you might get a pony or something drawn on the box when it comes back! 

[DSM]

Glad it's getting sorted out.  If you're extra-lucky, you might get a pony or something drawn on the box when it comes back! 

...or a caricature of yourself looking like an impish ogre in coveralls.....or, a taunting scene in which the new stock is embedded in stone but you have been rendered a quadruple amputee by a terribly mysterious dark lord....or,.....  When I go to the UPS store to pick up mail I know when something I've ordered has arrived because everyone is on deck.  Jus' sayin' is all.   

[RobertSlaughter]

The testimonial by aeropilot4fun above is yet another reason I'm itching to get enough funding to pick up an XCR. It's not just the quality firearm technology, its the company itself and how it operates. And the folks on the board don't hurt much either.

[aeropilot4fun]

Ok, got the rifle today. Looks great. Happy to have the upgraded trigger and I noticed that the piston is shorter than my old one but with a longer stainless attachment to get to the gas block. Is this a new standardization part to fit shorter rifle mods like the SF version, etc.? (ie same piston, just use a shorter attachment for a shorter upper/barrel?)

[DSM]

Is this a new standardization part to fit shorter rifle mods like the SF version, etc.? (ie same piston, just use a shorter attachment for a shorter upper/barrel?)

Yep.