How to make weapons (knives) in the Pointshop NOT equip upon purchase?

[bubbyodo]

Hey everyone,
I've got a Jailbreak server running Jailbreak 7 by Excl and am trying to add some CS:GO knives to the pointshop. However, when players purchase the knives, they automatically equip them. This is bad because at any time a prisoner can just spawn a knife and shank the hell out of everyone else. I'd like it so that when the players purchase a knife from the pointshop, they do not equip the knife into their inventory straight away, but the next time they pick up a knife, it will be that knife they have equipped. Also, even after purchase, players can just equip a knife skin and it will appear in their inventory (not good).
Here's the current pointshop code for one of the knives:

ITEM.Name = 'M9 Bayonet Knife' .. ' | ' .. 'Tiger Tooth'
ITEM.Price = 20000
ITEM.Model = 'models/weapons/w_csgo_m9.mdl'
ITEM.Skin = 9
ITEM.WeaponClass = 'csgo_m9_tiger'

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

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

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

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

I appreciate any help that can be given! :)