One of the most difficult problem to tackle on this kit is represented by the periscope brush guards. Unlike some more recent Dragon kits that include PE options, this particular M4A3 doesn't. Although I was skeptic about any attempt to replicate it, I managed to build a periscope brush guard today.
I added the PE headlight protections and some minor improvements on the siren protection (too bad Dragon didn't provided a PE option). The back-lights protections and its wiring were entirely made from scraps.