Hey Raymin Boi,
I've checked the way the double equip was implemented in the code after being made aware of the fact that there seem to be exceptions to the usual way of double equips only being applied to weapons with a holster timer. It seems like the minigun 2.0 does get prevented from being double equipped, so logically speaking the vortex minigun 2.0 should also be affected by this. Contact any Community Owner in-game and refer them to this refund request to claim your vortex minigun 2.0 back. Sorry for the inconvenience!