First unsubscribe the addon. After that go to your local addon folder. You find it in a path like that "C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\addons" (depends on where you installed gmod). Delete the lua file with the name of this addon in your local addon folder. Finally subscribe to this addon and start gmod. Gmod should now download the addon. If the download is successfully, it should work now without Problems.

and so how do i do that then?

I recommend to unsubscribe the addon and deleting it in your local addon file. After that subscribe to the addon again. If your download works properly it should work without problems.

@ Booce Heroe10x whats wrong with being gay? im straight and i have no problem with people who are gay.... i mean whatever makes someone happy is their own buisness

maybe missing textures where do i find them?

I dont know exactly what you mean, but it works fine on my server. I tested the item with friends and they had no problems too. Maybe you have subscribed another Gun of that type, that blocks this one or you have some missing textures.

i suggest putting the whole song on a loop and further more its not really gay it just needs tweeks for example the gun just shoots the record bombs thats my favorite however the primary and secondary isnt shooting

HA GAYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY