100% full ambi

FNS9c
ambi button would be improved with non-opposable buttons
(if don’t carry extra mag, then this is fine...probably the case for most people

Holster covering mag button

More important than fast mag changes, is reliable second shot functioning and retention of inserted mag.

Pinch operation for firm grip when shaking out mag
HK vP9 Small enough grip to pinch

Accidental mag disengagement

American mfgs with paddle?
Kel-Tec P17
American 9mm please...