Sorry about the SMG bug, I'll fix that!
I tried moving the gun down. but the Vive controllers bang together. Rift users don't have this issue as their controllers are much smaller so maybe I should make it so it detects the Touch and moves it to a better spot on the controller. Will tweak and experiment!
It's not possible to throw away mags - if you let go, they automatically disappear into your inventory so don't worry about letting them go. Is that what you meant? Sorry if I misunderstood. I agree that health is a bit too rare, though. I'll slowly balance the game as updates come out.
Also, sorry for putting off proper left handed support for so long. It will come soonish!