This is quite cool- a miniature .17 Mach 2 Browning MG. Is it the world's smallest? Probably- regardless it sure looks like it would be a lot of fun to shoot.
Found this over at TechBlog- where the "world's smallest" claim was made. I had a quick glance at the comments- seems the weapon is a Tippmann- and found this statement:
"I hope this “gadget” doesn’t fall into the hands of terrorists."
Good grief- are hoplophobes so terrified that they just can't understand anything about firearms at all?