I didn't think this would fit, if its for real?

http://www.youtube.com/watch?v=HBCe8ld3kik&feature=youtu.be

There was also a thread on another forum about it (Not AR, glocksomething or another).
Can find it if you's wish, but doesnt give much/any info on it, just mentions after extensive modification etc and that it was a .585 Nyati they re-did to .600 Nitro.

If anyone has more info, let us know!

Cheers,
Troy.