Well I asked this same question on ar15.com and got some responses.
The current winner is the dissipator,
and the kewl picture of the thread is this one - - -



A pretty convincing argument. And it just reaks of major kewlness.

A rifle length SIR. Backed by an ARMS 40.
Hogue grip.
Vltor rifle length stock.
Aimpoint sight in an ARMS 22M68.
KKF A3 post-ban brake on the front end.