Help making pointshop weapon permanent

[Mylofied]

For some reason when i add this to the pointshop and equip it i dont spawn with it. But it works if i do: ITEM.SingleUse = true. I want to be able to have people spawn with this permanently. Please state what i'm doing wrong! Thank you!

ITEM.Name = 'CSS Knife'
ITEM.Price = 10000
ITEM.Model = 'models/weapons/w_knife_t.mdl'
ITEM.WeaponClass = 'weapon_knife'

function ITEM:OnBuy(ply)
	ply:Give(self.WeaponClass)
	ply:SelectWeapon(self.WeaponClass)
end

function ITEM:OnSell(ply)
	ply:StripWeapon(self.WeaponClass)
end

[I'm great]

Regive it to players who bought it on next round?

[Aeternal]

function ITEM:OnEquip(ply)
	ply:Give(self.WeaponClass)
	ply:SelectWeapon(self.WeaponClass)
end

function ITEM:OnHolster(ply)
	ply:StripWeapon(self.WeaponClass)
end

Also add ITEM:SingleUse false