i reverse engineered a sopmod stock. here is the step file.

https://damageindustriesllc.com/store/index.php?route=product/product&product_id=2589
this site sells the hardware required for the latch. idk where to get o rings for the plugs.
i made the battery compartments slightly bigger.

i will probably update this file in a while after i've done more testing.

there are an experimental brace and cheek rest included.

there is a recess for this type of sling mount.
https://magpul.com/sling-mount-kit-type-2.html?mp_global_color=118

updated 6/26/24: minor fitment issues fixed.

updated 6/27/24: i reuploaded with all three versions turned on before exporting as a step file

updated 7/8/24: I added the butt stock cleaning kit (oil bottle, brush holder, and bore snake holder)