a usable turret

hey i was wondering if someone knows where I could find a usable turret thats not adv dup. they always require so much and never work in the end for me. if theres an entity or swep out there, please reply! thanks

If you follow the instructions given and spend a little time, advanced dupes give you no trouble at all. What’re you having problems with?

I have no idea. I download everything they require, and when I go to adv dup ingame, its not there like I didnt download it. do I need hl2?