No I'm not a apiarist, the "bkeeper" came from me somehow allways getting bees in my patrol cars. It became a running joke.
Back to XCR. I have the heavy barrel model in 16" 5.56, it is not much heavier than the light barrel in my view. A few ounces is not a big deal for me not to mention makes a rifle with very low recoil already, to feel even less.
As for folding stocks, WHY? Call me old school but I was taught to shoulder a rifle when I fire it. Maybe for storage a folding stock would make sense, but with the CA. complaint extended muzzle break you do not really save on length. The stock that comes with the model 3 is very close in length to a M4 stock fully closed.
They call it a muzzle break because in that configuration if it was a flash hider it would became an evil assault rifle by Ca. law.
If you must have the folding stock you can be purchased one at any time and install it by removing one screw(although this would make you a felon in Ca.). I would say wait, save the extra $$$ and buy the model 3. Robinson is working on an improved stock for the XCR that is far better than the ones currently offered and my work out to be Ca. complaint.