In the GLOBAL section of SOUNDS folder is tankgun.wav .
Each tank model is searching for THIS file for GUN FIRE sound.
Any differences in each tank gun sound would be driven by the tank model itself (coded by HiTech).
The file tankgun.wav can be edited or changed but is the SAME file ALL tanks are looking for to USE the sound.
So what I am saying is....ALL TANKS use the same wav file for guns in tanks. It is NOT possible at this time to separate each to its OWN gun sound....sorry.
Also Moot, the M2.wav is only the primary gun sound ie; 30cal, 303, 7.9mm, 50cal. Cannons are secondary and use their own specific wav file, 20mm, 30mm, 40mm etc.....Tic