Having seen a real Magpul masada, I have several problems with it. First the fire select switch is so low and close to the grip that your hand actually rests right on top of it. Very unconfortable and it could be accidentally switched. Also, the charging handle is right below of the top rails so if you have an optic, it could get in the way when cocking it. same if firing left handed with the case deflector in the way also. This could be fixed by having the charging handle slightly angled down and the fire selector higher. These problems with the real Masada could be the same with the Airsoft version too. These problems arn't too bad though. At least not for airsoft. About the stock, it's actually very sturdy and has no flex unlike the M4 stock. When you pull the Masada stock all the way out, (the 8th position) the cheek rest is pretty far forward that you have to have the worst firing posture to rest your cheek otherwise you just rest on the back stock. Semi unconfortable. My $0.02 LOL the stock on the SCAR looks like a foot as shown here (not my pics):
