Kit identification assistance please: Does anyone happen to recognize what model kit this part (circled) comes from? I believe it is a machine gun mount from an armored vehicle. It would be likely 1:35, 1:48 or 1:76 scale. Also, pre-1976. The closest I have found is the 1973 Aurora M8E2 Munitions Carrier, but the mount does not have the notches near the tips. Thank you in advance for any suggestions!