You will find two files. A Milwaukee Packout deep tray and a 10/22 eight-count magazine tray. Both of these files are a Work in Progress (WIP), however, they currently work for their individual or combined purposes, for the most part.
Individual:
Packout Tray: If you need a new Milwaukee deep tray for your packout system, this tray works much like the original. Currently, the tray only fits the Compact Jobsite organizer. The standard-size organizer has some side ribs that interfere with inserting the tray into the system. So some tweaks need to be made.
Magazine Insert: The magazine insert allows for the transport of eight 10/22 magazines. Loaded or empty the magazines ride directly on the ledges within the tray. To remove a magazine it's best to grip the magazines from the sides, as there is little room to remove their magazines by gripping the ends. The tray also has a small little handle in the middle of the tray, which allows the tray to be picked up with two fingers. Larger fingers may be a problem, but your experience will be the real judge.
Combination:
I designed a small change to the Packout tray, so that the Magazine insert can be inserted into the Packout tray, and rest on four small ledges. This keeps the magazines loosely cradled by the lid of the organizer and still has some spare space below the insert.
WARNING: I do not recommend using PLA. If you are out in the sun on a hot day, the PLA will warp fuse your magazines into the tray. The magazines will be fine, once you pry them loose from the warped tray. Ask me how I know. PETG at minimum, ASA would be best.
The author remixed this model.
I ended up using the OG tray as a template for the 10/22 magazines. I tore the structure down to a single magazine insert and can now use it to generate magazine trays of different sizes.