TTT - Change Rate of fire on weapon

[Swagaloo]

Can anyone help out with changing the rate of fire on a weapon?

I already have tried

SWEP.Primary.RateofFire 
SWEP.Primary.RPM
SWEP.Primary.Delay
self.Weapon:SetNextPrimaryFire()

M16:

AddCSLuaFile()

SWEP.HoldType			= "ar2"

if CLIENT then
   SWEP.PrintName			= "M16"
   SWEP.Slot				= 2

   SWEP.Icon = "vgui/ttt/icon_m16"
   SWEP.IconLetter = "w"
end

SWEP.Base				= "weapon_tttbase"
SWEP.Spawnable = true

SWEP.Kind = WEAPON_HEAVY
SWEP.WeaponID = AMMO_M16

SWEP.Primary.Delay			= 0.19
SWEP.Primary.Recoil			= 1.6
SWEP.Primary.Automatic = true
SWEP.Primary.Ammo = "Pistol"
SWEP.Primary.Damage = 23
SWEP.Primary.Cone = 0.018
SWEP.Primary.ClipSize = 20
SWEP.Primary.ClipMax = 60
SWEP.Primary.DefaultClip = 20
SWEP.AutoSpawnable      = true
SWEP.AmmoEnt = "item_ammo_pistol_ttt"

SWEP.UseHands			= true
SWEP.ViewModelFlip		= false
SWEP.ViewModelFOV		= 64
SWEP.ViewModel			= "models/weapons/cstrike/c_rif_m4a1.mdl"
SWEP.WorldModel			= "models/weapons/w_rif_m4a1.mdl"

SWEP.Primary.Sound = Sound( "Weapon_M4A1.Single" )

SWEP.IronSightsPos = Vector(-7.58, -9.2, 0.55)
SWEP.IronSightsAng = Vector(2.599, -1.3, -3.6)


function SWEP:SetZoom(state)
   if CLIENT then return end
   if not (IsValid(self.Owner) and self.Owner:IsPlayer()) then return end
   if state then
      self.Owner:SetFOV(35, 0.5)
   else
      self.Owner:SetFOV(0, 0.2)
   end
end

-- Add some zoom to ironsights for this gun
function SWEP:SecondaryAttack()
   if not self.IronSightsPos then return end
   if self:GetNextSecondaryFire() > CurTime() then return end

   local bIronsights = not self:GetIronsights()

   self:SetIronsights( bIronsights )

   if SERVER then
      self:SetZoom( bIronsights )
   end

   self:SetNextSecondaryFire( CurTime() + 0.3 )
end

function SWEP:PreDrop()
   self:SetZoom(false)
   self:SetIronsights(false)
   return self.BaseClass.PreDrop(self)
end

function SWEP:Reload()
    if (self:Clip1() == self.Primary.ClipSize or
        self.Owner:GetAmmoCount(self.Primary.Ammo) <= 0) then
       return
    end
    self:DefaultReload(ACT_VM_RELOAD)
    self:SetIronsights(false)
    self:SetZoom(false)
end

function SWEP:Holster()
   self:SetIronsights(false)
   self:SetZoom(false)
   return true
end

Any help would be appreciated. I have already looked through the forums online and here, and have found info from 2013 and 2014, but none of it worked.

Thank you in advance!

[c👌de_g🎷]

[URL="https://github.com/garrynewman/garrysmod/blob/master/garrysmod/gamemodes/terrortown/entities/weapons/weapon_tttbase.lua#L101"]SWEP.Primary.Delay[/URL]