Well, if you were an armorer and had all those nifty gauges to throw on a RRA, you would see that they take some fine components, mostly from Stag or their parent company, and do a piss poor job of putting them together. I have seen bolt after bolt come thru that was not properly staked, I have worked on everyone of the guns that the DCS has at the prision thru the shop for various reasons....
RRA does not use milspec buffer tubes instead they use a cheap Chinese knock off. I have had to replace trigger sets because they failed (most shooters dont know how to use a 2 stage trigger and it makes about as much sense on a battle rifle as teats on a steer so it is wasted on the average shooters).
There are lots of other short cuts they take as well. The lack of a chrome lined bbl is just a cheap way to go. The crap they give about the thicker bbl under the handguards being more accurate is also bunk. The M4 tapper of any of the ones I listed are every bit as accurate. And the ER Shaw bbls of the Stag have shown to be MORE accurate with the right grain weight.
In short, as an Armorer for an Army SF unit, I would not feel safe carrying a RRA gun into combat and would give my guys AK before I let them do so. Yeah, my professional opinion of them is that bad. And I guess the DEA agrees since they canceled the contract early.
If you like yours great, you couldn't GIVE me one.