[Face9000]

Is there any way to add the guy in ammunation?

I've already the interior but i havent the buy from buying weapons.

[Eeeh]

https://sampwiki.blast.hk/wiki/SetPlayerShopName ?

[SMCentral]

Or if you want it fully customized.. create your own NPC and dialog or menu. That way you can fully control the ammunation shop and you can also make it work with your anti-cheat systems.