i guarrante garry didnt notice
if you kill father griogori aka monk. he will drops annabelle
for people who dont know. you can access console on gmod. just type this if you are server owner
give weapon_annabelle

For people who didnt know. this weapon doesnt have additonal viewmodel it uses same viewmodel with shotgun instead. uses beta shotgun hud. maybe if this fact incorrect. please correct me
uses 357. ammo

unobtainable if you even kill alyx with has alyx gun
only server owner can get this
give weapon_alyxgun
it uses unused ammo type known as Alyx gun ammo
if you are server owner please use this
givecurrentammo
it gives maxium ammo which weapon is holding
it doesnt have any hud icon when player is having it. in beta most likely it has hud
originally player and alyx meant to change its mode. it features 2 diffrent modes. can be seen by spawning alyx gun model and later use animation tool(can be installed form actually workshop)
there's list of modes
Pistol(Default)
SubMachine Gun(Used)
Rifle(Unused)
there's still chance to use unused ones(unused modes) with morph mode(can be found on workshop)

currently its unused weapon ever! it can be ONLY picked up by server owners
give weapon_oldmanharpoon
it uses same hud with Beta SMG(MP5K form Half life 2 beta)
view model is missing. nothing will be does with it. this unused weapon cant be used. homever if you do this.
weapon_oldmanharpoon
in console most likely spawns an unpickable harpoon
fisherman with his harpoon can be seen at half life 2 lost coast

This weapon is clearly used for testing sweps. its overpowered i didnt known much about it. if you are server owner.
give weapon_base
on console you got it.
i not known much about it. but its overpowered as said in weapon stereotypes #1(thanks to crigence's guide for leting me know weapon_base)
Pistol ammo
features 2 mode
1- AR2
2-Shotgun

If you had Extended Context. you could change NPC's weapon. on that change menu there was briefcase and packgage weapons. you aint able to get them(even idk its weapon code) its kinda very secret. and weird.
Note: there was harpoon there too. but its collectable by give command
Thanks To RedIsBlue for this

Me - Creating Guide
Half-Life wiki - For making how entity codes are
Crigence - His guide maked me how weapon_base works
RedIsBlue - Showing Briefcase and Packgage items for npc
And you for reading this good guide