[flipper35]

They tried a modified one (GAU-13/GPU-5) on several different aircraft and it could even be fitted to an F-5 which sounds like a disaster there.

The results were less than desirable. In fact, they were horrible. Within the first 48 hours of continuous combat operations the GEPOD30s were proven to be totally unable to satisfy their intended mission. Precision fire was almost impossible with the setup as the F-16s software had not been adequately modified for aiming, and the vibration was so bad when the gun was fired that software tweaks probably would have made little difference anyway and it wreaked havoc on the F-16's sensitive electronics and mechanical components.

The reality is that the system was so ill-suited to the aircraft that just firing the gun multiple times would tweak the pylon it is attached to and thus it would become skewed far off zero. Not to mention that in comparison to the low and slower flying A-10, in actual combat the F-16's high speed made it hard to get a proper sight picture to aim during long strafing runs. Apparently maintainers and pilots had warned that the gun was ill-suited for the light fighter long before the deployment, but their mission was to try and make it work.

The F-16 Gun Pod That Tried To Shoot Down The A-10 Warthog