The main display and control tower are from a set called
countdown, however it is shortened by 1 level.
The
Tower is from custom built mostly from a set called
Flood Siege, and
UNSC Mantis.
The Turret is from
Orbital Banshee Blitz, and I used spare parts from random sets for the base of it.
The Mini-figs on display are all Mystery pack rare-secret rare figs from: Power Rangers, Marvel and Halo.