hook.add("weapon:buy", id, function(e)
	...
end)

hook.add("weapon:buy", "myplugin.no_awp", function(e)
	if e.weapon == "weapon_awp" then
		e.player:hud("AWP запрещён на этой карте")
		e:cancel()
	end
end)

hook.add("ammo:buy", id, function(e)
	...
end)

hook.add("item:buy", id, function(e)
	...
end)

hook.add("item:buy", "myplugin.no_defuse_for_t", function(e)
	if e.item == "defusekit" and e.player:team() == "t" then
		e:cancel()
	end
end)

hook.add("ammo:pickup", id, function(e)
	...
end)

hook.add("weapon:drop", id, function(e)
	...
end)