Actually, dogs can and have been trained to find explosives and use that to find guns that have been tossed, etc.
DUmmies? If you're willing to give up ANY freedom to take away freedom from another, you're no longer worthy of discussion. Poof-begone.
Finally, every time you idiots propose something like that, gun sales skyrocket. For every weapon you try to ban, ten more take its place. Case in point, my pretty little Sig that I picked up not long ago. Yes, ammo for it now is ridiculously expensive, but even that won't last forever.
Barack Obama wants to round up your guns, but all he's accomplished is being the best friend the gun companies have ever had. 60 MILLION weapons sold in the last five years, DUmmies. Think about THAT.