But that dont remove the vehicle again when you are done using it, like you turret spawn gun.

yes, if you look at my entity contructor, it does something like that

Can you make a spawn gun for vehicles like the TX-130 ?

Hey Stryker, yeah that bug is because of a hook I use that checks to see if people are picking up small props. I use this hook to allow people to still be able to shoot the top turret otherwise when the person who deploys it presses e on the turret, the entire thing would get picked up and put in their inventory. My suggestion: make sure there aren't any turrets down when picking up props. Im sorry I dont have a fix for you other than that but there was no way to make the turret function as it does now without that hook.

I do not have plans for making the cannon deployable right now but in the future its a possibility.

Also do you plan on making the Cannon a deployable entity aswell?

Theres a bug that disables the ability to pickup small props. Heres the error that happens whenever a player tries to pickup a small prop with the "use" E key.
[ERROR] addons/evan's_deployable_turret_1382020460/lua/entities/lazer_cannon_e/init.lua:170: attempt to index field 'BaseEntity' (a nil value)
1. fn - addons/evan's_deployable_turret_1382020460/lua/entities/lazer_cannon_e/init.lua:170
2. unknown - addons/ulib/lua/ulib/shared/hook.lua:109