FGC-6: DMB D.R.U.M. add on set for display stand for the GBB models

to be clear this is not a functional airsoft drum mag. this a dummy version of the DMB D.R.U.M. where by you can swab out the front plates for a custom look with the ones that you can find on odysee. 

mag tower wise you can select a fgc-6 (R6, P6) one. or one made for use with G series GBB pistols.

to complete this set use the base plate parts from this set.
https://www.printables.com/model/617123-fgc-6-display-stand-for-the-gbb-models
https://cults3d.com/en/3d-model/various/fgc-6-display-stand-for-the-gbb-models

assembly wise: use 6 M3 bolts to attach the rear parts the length of the bolts are not supper relevant for this. but 15mm should do

attach the drum back to the drum body first. then you can attach the mating plate to the tension knob and and attach that in turn to the drum body

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for a functional model look at the HPA FPA version this works with AEG M4 Hi cap mags so basically as a mag adapter
https://www.printables.com/model/1395346-diy-hpa-fire-pin-assembly-beta-for-the-fgc-6-parti