Are you still working to maintain and bugfix, and are interested in hearing reports? If so, currently, the fixed 50-mm storm gun spawns the muzzle flash effect at the center of the cube section that includes the cargo port of the gun instead of at the muzzle. For the 50-mm stormgun turret, the effect is in the correct location.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2879953169