Something along the lines of the Russian RS-1 GRAD
(a knife/bayonet with integrated 4-shot .22-Lr repeater) or the Chinese QSB-91
(integrated 4-shot 7'62x25mm repeater)...?
"It is criminal to teach a man not to defend himself, when he is the constant victim of brutal attacks. It is legal and lawful to own a shotgun or a rifle. We believe in obeying the law." -- Malcolm X
"We (atheists) act in good conscience because we believe in moral principles, not because we expect a reward in Heaven." -- Margherita Hack