To all who have not contributed anything useful in regards to the sole purpose of this thread: Thanks for nothing. I ain't gonna argue about it.
I have to agree that the top cover is the easiest part of the gun to bash with but it also seems like the least reinforced. even though the butt of the gun supported half by plastic, the RFB seems to have all it's strength longitudinally. The end of the barrel is tempting to poke with but other than being really painful how disabling would that be as an attack? It's unfortunate the magwell isn't a good choice (or is it?) as a surface to strike with, because you can get a lot of leverage swinging the weapon that way.
Does anyone know of anything they can replace the flash hider with that's really pointy?