Yea, I would be both shocked and disappointed if they didn't have dual-guns in the rules somewhere.<br/><br/>In the mean time, how about something like this:<br/><br/>When you use two of the same ranged weapon at the same time you only use one, but it gets +1 burst (so you can burn through your ammo even faster if you want) and Spread 1. If the weapon already has Spread, you get 1 automatic effect on your damage rolls.<br/><br/>Using two identical melee weapons... Uh... Maybe +2 dice on damage?<br/><br/>If you use two different weapons, well, you just have two different weapons to use on your turn. Also you can benefit from passive or defensive traits, like parry. (that's actually already in the rules)