The ED-209 Enforcement Droid.
Precursor to the Robocop series, these bots were a failed line of police droids released by the Omni Consumer Products corp.
Adapted from a model found on Google's 3D Warehouse
Process: export the STL from Sketchup (it only gives me DAE as a valid filetype, but that works) then convert the DAE to STL in Meshlab, and then fix the file in Netfabb.
This works for direct conversions; if you want to edit the file in 3DSMAX or Maya, output to Obj in Meshlab and you should be able to open the Obj anywhere.