This is a 28mm scale quad Anti-Air Turret designed to be used with current 40k sized models as well as my stand alone turret base(http://www.thingiverse.com/thing:1433038) and future planned buildings. This has 2 different body styles depending on the variety you would like to print out. It is simple to assemble and easy to print. (base not included in download)
Use higher resolution for sensor dish everything else can be done on less resolution.
You can either print the upper and lower body and sensor dish or the upper and lower body mk2
Sand down and use epoxy to fill as desired to prepare parts. Glue together the upper and lower gun mounts sand as necessary. Dry fit upper and lower bodies along with gun mounts, file and sand as needed to fit and glue the upper and lower bodies with the gun mount in the proper hole keeping glue away from the gun mount unless you want it locked in one position. Once again use epoxy or green stuff to fill in any gaps and sand as needed. If you are not using the mk2 body glue the sensor dish to the top.