Quote from subasemg on 07/09/10 at 19:37:55:

Probably not, but it'd be a nice little upgrade if they did!
 
I still think it'd be great after all of the little details were worked out to make a much higher priced deluxe version - an all stainless and polymer Carbine RFB, with an exotic black ceramic coating like Tungsten DLC on the stainless parts.

It seems to me this is another annealing, heat treatment problem. Same thing that happened with the casings tube. They switched to stainless for that, seems to me they'll need to switch to stainless for this one too.  
 
They need to reign in their dodgy outsourcing.
 
Maybe instead of annealing parts that are stamped or machined for more durability, they can just skip that stage and just give it a nitride/tennifer coating. This will get rid of the heat treatment problems as well as make the gun rustproof. (and make the chroming of the gas tube not necessary) Could be cheaper in the long run.

Yep, Burt's reference sounds more like a kaboom. Still, the RFB contained whatever it was - just as it was designed to do. After reading that thread, until we know more, I'm agreeing with those saying it was most likely bad ammo (weak primer, case head, etc).

Quote from ktwm on 07/30/10 at 18:21:55:

 
I would still argue that the second one doesn't necessarily even qualify as a kaboom either, since there's no evidence that the weapon was actually damaged in any way (magazine notwithstanding).  Blowing out a primer can and will cause the exact same effect, so until it's been inspected by someone with experience on the system, I'm extremely hesitant to say that it was indeed a "kaboom".
 
Quote:

 
Tennifer and heat treating are two different processed that are used to produce two different objectives, to the best of my understanding.  ktwm could undoubtedly give a better explanation, but I don't think that nitriding is going to fix any problems there.

Quote from Wes_Janson on 07/31/10 at 15:43:16:

 
Tennifer/Melonite/nitriding wouldn't have prevented these issues, they make the top few microns more brittle, not less.
 
As to issue #2, I agree with Wes, the second one sounds like a case head separation, blown primer, or something of this nature. The posters are not being forthcoming with the ammunition being used (that I've seen, maybe I missed it), and that's a red flag to me. Either way, with the gas piston design of the RFB, a magazine floorplate blowing out means gas leaked from the chamber, the end.

Look at this video.
http://video.google.com/videoplay?docid=5937681496067804901#
 
The RFB is overbuilt. A polymer butt stock will only crack not shatter if there is a kaboom , since there is a long thick rectangular piece of steel running along most of the weapon, it will force gas downward. In anycase for the CFB it would make more sense since the RFB is already quite light for a .308 with 18 inch barrel.