hah, actually, they are 30mm grenade launchers, but I could only imagine that there is a multitude of various types of rounds that can be put in there. as for the type of sword I'm changing it to this one. Still had that nice slice and dice ability, weighted, but also not so much that it prohibits stabbing. should be a nice mix: 
[img]http://www.swordsknivesanddaggers.com/kas/Zombie_Hunter_Full_Tang_Sawback_Machete_01.JPG[/img]