1.6 of the beta has been released. (Getting Authorised while I write this.)
Here's a list of things we've done.
-Added super nailgun
-Balanced both nailguns for the current version(This won't be permanent. Just until we get weapon placements done.)
-Fixed some bugs related to the shotguns
-Removed the SHAFT since it was buggy and useless.
Next update you can expect more bug updates and a couple of map tweaks.