Yes the UZI is like the UBER soldier right now. It is the test base for weapons. Has a single shot mode also by pressing the v key.
The gunspec has the most updated statements for control in it, unless you have any of Errant AI's new weapons.
It is also set up to use DX11 stuff now.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit, Screen resolution 1680 x 1050.