You need to rig this up to an actuator. There are lots of things you could do with that.
You could detect when a machine pistol is getting uncontrollable muzzle rise, then stop it until the trigger is released and reapplied.
You could hold off firing until the gun is stable. When the trigger is pulled, look for smooth movement. (no angular acceleration, and the regular acceleration has a stable magnitude equal to gravitational acceleration) The motion for leading a duck is fine, but the motion of stumbling and getting snagged on bushes is not.
You could disable the gun if acceleration goes to zero, for example by being dropped. After half a second of stable gravitational acceleration, reenable the gun.
You could detect when a machine pistol is getting uncontrollable muzzle rise, then stop it until the trigger is released and reapplied.
You could hold off firing until the gun is stable. When the trigger is pulled, look for smooth movement. (no angular acceleration, and the regular acceleration has a stable magnitude equal to gravitational acceleration) The motion for leading a duck is fine, but the motion of stumbling and getting snagged on bushes is not.
You could disable the gun if acceleration goes to zero, for example by being dropped. After half a second of stable gravitational acceleration, reenable the gun.