Back to your C.S.h.G design, how do you compensate for the softenss of the foam darts? In other words, what guarantees that the light foam will fall into the rotating chamber? Boltsniper and others solved this by using a rigid shell to hold the foam, but this idea then requires a shell ejection system somehow. I hope that this criticism only helps your project along rather than hinder it.
I hate to make this my first post, but please do give a range on your Sawtooth. On a related note, I still have my old Sawtooth, but I lost the clips for it; would you have any additional clips or know anyone who has extra clips?