Gunbow!?
http://psp2.psupedia.info/Southern_Cross

The whole concept of combining guns with things tends to end up being 'design the most ridiculous bayonet you can think of'
I'll never understand the fascination with FF8 gunblades, where the bayonet ended up so ridiculous that it no longer worked as a gun, and where the gun aspect was used in such a way that the recoil made it less effective as a blade D: