I've designed a 3D printable midcap for ak (again, this time it's shorter handier and feeds 80-90bbs (exists in 3 variants, here comes render of the flashiest one)) : r/airsoft
3D Printable Airsoft Speed Loader Funnel for Airsoft Speed Loaders / Hi-Cap mags by Michael Equi
Ken's Props 3D Printed Threaded 5.1 Hi Capa Barrels – Full Auto Airsoft Inc
I hate filling my drum mag so i made a funnel for m4 Hi cap mags : r/airsoft