I found a bug that affects the repair gun. Now this is more of a cosmetic bug, and doesnt affect its functionality.
note: Im not sure if Im not the only one who experienced this bug.
Sometimes, when 'firing' the repair gun, after it is done firing, the gun itself seems to jolt very violently. It looks like the recoil of firing the repair gun is built up until you are finished firing. This bug also effects the advance repair gun for the Hotwire/Technician.