Finally have a fixed stock design that I like. It is ultra-light and accepts QD sling cups. Unlike the Magpul MOE fixed carbine stock, it has a usable length of pull. LOP is adjustable by print-to-length butt pads. : fosscad

Printed stock, QD inserts and insert plugs in PA6-GF. Butt pad has a PLA pro plate, with a filament change to TPU95 for the pad. I’m using the M5 threaded inserts from CNC Kitchen for the plugs and the butt pad screws, but i think you could print the threads directly into the stock and the plugs since none of the hardware is actually load bearing.