Finally got some more material and a good casting 



The other pieces are molded too, just not all poured.
Here are some of the first ones / rejects:

The barrels have problems with alignment and bubbles. They could be cleaned up with a little elbow grease
The other parts cast fine. I was just experimenting with the amount of dye on the gray ones and pigment on the aluminum one.
If anyone's interested, I could compile a complete kit with a reject barrel for say ... $30.00 + shipping ??? You just need some semi skilled modeling skills 
I still need to mold the little greeblies but can do that pretty quick and the triggers will have springs, screws so they can work too 
..