how do i make my derma spawn a weapon

I have made this derma and i was wondering how when you press the button instead of it spawning a model it spawns a weapon/entity, if you do this please leave where the weapon/entity goes for each button blank of <entityhere>

[lua]function shop()
local drugs = {}

    drugs[1] = "models/katharsmodels/contraband/zak_wiet/zak_wiet.mdl"
drugs[2] = "models/katharsmodels/syringe_out/syringe_out.mdl"
drugs[3] = "models/cocn.mdl"
drugs[4] = "models/drug_mod/the_bottle_of_water.mdl"
drugs[5] = "models/ipha/mushroom_small.mdl"
drugs[6] = "models/boxopencigshib.mdl"
drugs[7] = "models/smile/smile.mdl"
drugs[8] = "models/jaanus/aspbtl.mdl"

    local frame = vgui.Create("DFrame")
local IconList = vgui.Create( "DPanelList", frame ) 

frame:SetTitle("npc Shop")

IconList:EnableVerticalScrollbar( true ) 
IconList:EnableHorizontal( true ) 
IconList:SetPadding( 4 ) 
IconList:SetSize(200, 160)

for k,v in pairs(drugs) do
local icon = vgui.Create( "SpawnIcon", IconList ) 
icon:SetModel( v )
IconList:AddItem( icon )
icon.DoClick = function( icon ) surface.PlaySound( "ui/buttonclickrelease.wav" ) RunConsoleCommand("gm_spawn", v) end 

concommand.Add( "npcshop1", shop )


make a console command where you can have a prefex after it like Buy mp5 and do that its not really hard

What, i dont get that?

Anyway, how can i make it when they press the button it runs a console command for that button?