I call BULLSHIT

A centrifuge-based gun with no sound, no heat, no mechanical wear, no recoil even when firing .50-caliber projectiles at up to 8000fps at up to 120,000rpm cyclic, that cannot jam ...

Um, excuse me.  But.  This article was supposed to be published on April 1, right....?

Update:

phanatic, a poster on the guns thread, calculated the power requirements of this weapon from the specs claimed by the crank inventor and assuming perfect 100% efficiency.  Using those assumptions, he came up with a sustained power consumption of 100MW -- approximately 134,000 horsepower.

Noiseless?  Heatless?  Portable?  .... Yeah, RIGHT.