Hurray! Onomatopoeia!
Bolter's: Bmpff-Bmpff-Bmpff-Bmpff-Bmpff...
Lascannon's: Vmmm-Ffwwwwhh...
Plasma Pistol: Fffeww...
Plasma Gun: Ffewwaa...
Plasma Talon: Ffewwaffewaa-Ffewwaffewaa-Ffewwaffewaa-Ffewwaffewaa...
Plasma Cannon: Ffffeww-Paawwff...
Meltagun: Zzzzvvvmmm...
Assault Cannon: Wwwwhhrrrr-Bbbrrrrrrrmmmmmm...
Autocannon: Thump-Thump-Thump-Thump-Thump-Thump-Thump...
Flamer: Fffwwoooosshhh...
Grav-gun: Pprreeeill...