APS CAM870 6 BB Shell Insert

Due to my local CQB field not allowing more than 6 bb's per shot I made this spacer to reduce the standard MK2 Shells capacity to 6 bbs w/ two of the paper disks as wads.
Very simple installation as the tolerancing allows these to slide in firmly without the use of glue, you may need to adjust the Y / Z if the insert is too loose.

I may add a conical taper to the internal hole in the future to increase gas efficiency, but for now these seem to work just fine.

You can also scale this to 25mm Z / 17.15 X.Y for use in 3d printed shells that have the "deeper" capacity as well.