It's a semi-auto shotgun:
"A semiautomatic shotgun that has the ability to accept a detachable magazine."
Originally Posted by Olav
Out of curiosity, why does this rifle need a bullet button?
It doesn't seem to have any of the evil features that would require a bullet button.
There is no pistol grip, flash hider, collapsible stock, fore grip on the rifle. Is there a bayonet lug?