Yeah, i should've rewritten it. There is no Training STUN grenade launcher. A solution is making it having same delay and ammo of any other STUN weapon. The only difference is that you can change its delay on training rooms and ammo is infinite on GOD tag, also there's "/ghost" and "/bot ignore" command nowadays to avoid being annoyed.
Edit: I noticed it when i was trying to do consecutive rocket launchers shots on my bot after flipping it. The most effective one is "BL" type, but i don't have other training to keep shooting at it.