glua_swep_muzzleflash

SWEP.PrintName    = "Test"
SWEP.Author       = "Name"

SWEP.Spawnable    = true
SWEP.UseHands     = true
SWEP.ViewModelFOV = 55
SWEP.ViewModel    = "models/weapons/c_smg1.mdl"
SWEP.WorldModel   = "models/weapons/w_smg1.mdl"

SWEP.Primary.Automatic   = true
SWEP.Primary.Ammo        = "none"

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function SWEP:PrimaryAttack()
    if not IsFirstTimePredicted() then return end
    local vm = self.Owner:GetViewModel()
    local muzzle = vm:GetAttachment(1)
    local position = muzzle.Pos

    local flash = EffectData()
    flash:SetOrigin(position)
    flash:SetEntity(self)
    flash:SetAttachment(1)
    flash:SetNormal(Vector())
    flash:SetStart(position)
    flash:SetScale(1)
    util.Effect("CS_MuzzleFlash", flash)
end

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-- Disable alt ammo hud and secondary fire
SWEP.Secondary.Ammo = "none"
SWEP.SecondaryAttack = function() end