Custom TTT Guns Swep question

[SwftOne]

So I added a few custom guns on my TTT server, most of them work great. Although the sound is not working correctly with a few of them. The AWP and m3 are silent can't hear any shots at all. The MP5 you hear shots if your shooting it, but the guy right next to you does not. Here is what i typed in for each one:

MP5
SWEP.Primary.Sound = Sound( "Weapon_mp5.Single" )

AWP
SWEP.Primary.Sound = Sound("weapons/awp/awp_fire-1.wav")

M3
SWEP.Primary.Sound = Sound( "Weapon_m3super90.Single" )



and thank you very much for any suggestions!