Something I noticed about the Spartan:There appears to be some sort of area in the stock,noticed by many now, perhaps a gearbox? There also appears to be a button above the trigger that could turn the gun on? Also, it appears there is a priming handle at the top of the gun.
I also stated something similar a few posts ago. However the main problem I see with a blaster that feeds naked foam darts from magazines is that the breech would eat darts if driven too fast.