10 gauge shotgun
No way to answer- would depend on the pistol.
If the gun is spring then it is most likely not automatic but if its electric it is most likely automatic.
Other than a toy gun or water gun, the next most powerful one a citizen can have without a permit is a "B.B. gun".
577 T Rex
star cannon
The magnum .55 is the most powerful, but some Desert Eagle has the highest calibre bullet.
Probably the siege gun.
It is the dragon destroyer.
this automatic gun looks like..........your face! why would you ask me????????
The most expensive.
In the truest sense of the definition of "automatic", no a bb gun cannot be automatic. In function, however, a BB gun can be automatic. A good example would be the Drozd BB gun which fires full automatic, but used CO2 as the power source.
In a semi automatic gun you have to pull the trigger for each shot. In an automatic gun you just have to hold the trigger in to empty the clip.