Looks like this was probably done as a joke. I see a rather tricked out Glock that appears to be done by Agency Arms. It has an RMR mounted to the slide and is holstered in a Crye Precision holster. The Glock has a threaded barrel with the Tuff Products railed muzzle brake. Nathan S. wrote an article about it.  Then they added an Aimpoint micro and angled foregrip.