Help Needed Identifying Model Parts from ROTJ Badge

[Corellianexports]

I found the center piece, but am having trouble identifying the two, squares just to the left of it. They look like tiny engine pieces, but could be some thing else.

Thanks!

 

[mslz22]

Look like ammo boxes from tamiya 88 mm kit to me

 

[moffeaton]

 

[faustus100]

Also the Harrow ho train.

 

[Corellianexports]

Thanks, guys. Does any one happen to have these parts available, or do I need to track down the model kits?