SMG top for ADN Drum 42

SMG compatible top for the ADN Drum42, feeds FSR like a champ.

Printed parts:
Left side
Right side
Support
Ball lock (coming soon)
Activator (coming soon)

Tools required:
M3-.5 tap

Hardware Required
(2) M3-.5 x 35mm long socket head cap screws
(4) M3-.5 x 16mm long socket head cap screws
(2) M3-.5 hex nuts
(1) 1/4" diameter max. coil spring like these - http://www.mcmaster.com/#9657K39