"acf_gun is not a registered entity class"

[Frostice2013]

If installing this from the workshop is an issue just tell me

Problem: When attempting to create a gun, missile, engine, and others, instead of spawning it in it makes the error "[ACF - Error] Couldn't create entity: acf_gun is not a registered ACF entity class.". How do I fix this?

Sidenote: I already have wiremod. A solution to the problem I saw involved installing wiremod

[KemGus]

Hey, this addon is no longer supported, check out this repo: https://github.com/RedDeadlyCreeper/ArmoredCombatExtended