Stampede Brass holder - fitting remix

(File to be tested)

Printed the stampede brass holder from 4tacos4me for a friend - found that the missing lip was causing the plunger return spring to move around too much.

Added a lip to stabilise return spring.

Mixed in the collar for added stability.

EDIT: Someone fixed this design and actually got it to work, go here instead:
https://www.thingiverse.com/thing:4655362