An Eldar Guardian Heavy Weapon Platform (hwp) proxy model for Epic scale games (40k or armageddon etc).
The gun comes in 2 parts to make printing bearable. Also comes with a 20x20mm base with a little raised column for gluing the hwp to so it 'floats'.
because the base is small (same size as dreadnought) it is a bit squeezy. print out a couple of guardians (http://www.thingiverse.com/thing:1869486), cut off the 'base slots' and glue them on to taste.