this are mummy mags for in GGB airsoft pistols. in case you like to practice some dry fire skills like reloads, drawing, presenting, and actually dry firing. with out a risk of making a lot of noise, or excellently firing a BB.
the Pmag GL9 baseplate is not 100% the but it gives you a bit of the same feel.
the details at the bottom may not been that visible in the print orientation I have placed the STL in…
also note that the mag body it self is the same Menendez v2 (dummy version as the other set) so this is not made to be a 1 on 1 replica by any means.
https://www.prusaprinters.org/prints/87772-menendez-v2-dummy-mag-for-ggb-airsoft-or-fgc-6
there will be also a WE TECH G series base plate that will work with the GBB mags
these will fit in the WE TECH G series and most likely from other brands. and it will fit in the FGC-6
The author hasn't provided the model origin yet.