It’s an incredibly tight fit for PTS-LR mags, if the well was ~1mm in width and depth it would fit much much better. Also the mag release doesn’t quite catch but I’d presume that’s due to the tight fit. Otherwise, print quality is solid, and the part ultimately does work well enough for me to keep using it.

This adapter is fantastic! It retains the magazine via a springloaded locking clip, and fits into the speedloader like it should. Feeds the bb’s very smoothly; i bought a generic extension for the feeder that was just 3D printed, and I had to smooth out the bore of the feeding port in that one but this adapter has an actual plastic nozzle that gsts the job right the first time using it!