They've already passed their goal, so it's stretches for the next 34 days.
From the campaign:
The 28mm Heavy Calibre Machine Gun and Static Weapons Platform have been designed by Kit Burrows of Zinge Industries. He is a highly regarded 3D designer with an extensive portfolio of work.
We also have a range of three further new weapons, the Rocket Launcher, Cannon and Mortar designed which we will reveal in more detail on the way to achieving our funding target.