Here is a link to the models. https://www.thingiverse.com/thing:5679221
I have files that produce dimensionnally decent parts.That's the EZ part.......Material selection is the difficult part.Materials tried so far were either too hard to permit pellets to pass thru, ortoo flimsy/flexible to feed into the receiver properly.Each bore needs to have ribs to retain the pellets, but need to allow the pellets to pass thru when pushed by the bolt.The indexing notches are also tricky features...... Printed clips require a bunch of handwork......