To fix the gun missing all sounds but the actual shot you need to perform two steps:
Extract the addon file using gmad.exe from the garrysmod/bin folder.
Then look for
ttt_detective_rifle_380655813\lua\weapons\weapon_ttt_m98b.lua
and change line 48 to
SWEP.Primary.Sound = Sound("M98.Single")
save the file and put it into garrysmods\addons\ttt_detective_rifle_380655813\lua\weapons and your server.

Create a lua file (e.g. detective_sniper.lua) in the path garrysmod/addons/ttt_detective_rifle_380655813/lua/autorun on your server.

Put the following lines in the .lua file and save it:


sound.Add({

name = "M98.Single",
channel = CHAN_STATIC,
volume = 1.0,
sound = "weapons/M98/shot-1.wav"
})

sound.Add({
name = "M98_Bolt",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/bolt.mp3"
})


sound.Add({
name = "M98_Handle",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/handle.mp3"
})

sound.Add({
name = "M98_Deploy",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/draw.mp3"
})

sound.Add({
name = "M98_Draw",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/draw_2.mp3"
})

sound.Add({
name = "M98_Foley",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/foley.mp3"
})

sound.Add({
name = "M98_Clipout",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/clipout.mp3"
})

sound.Add({
name = "M98_Clipin",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/clipin.mp3"
})

sound.Add({
name = "M98_Boltback",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/boltback.mp3"
})

sound.Add({
name = "M98_Boltforward",
channel = CHAN_ITEM,
volume = 1.0,
sound = "weapons/M98/boltforward.mp3"
})

What is TTT?

can you make a versoin that uses the 7th slot (like any other Traitor/Detective weapon)

ok it works now XD thanks tho

Wierd, That isn't my fault its the steam workshops fault. It is broken sometimes.

doesnt want to download...

You are spawning it in sandbox, it only works in ttt

so i can hold the gun in my hands but sights wont work and fire wont work it says to check the console any help?

They should be working.

10/10 would rate again.

Ill check it out this afternoon.

Bolt pull sounds are silent for me. Am I doin it wrong?

It does around 60 damage bodyshot and instakill if headshot.

kill*

is this a one hit kil sniper (not headshoot)?

No, Its for TTT.

does it work for sandbox?

If you have any problems, let me know.