GMOD M9K/Mad Cow ammotypes.lua help needed

Sorry if I do anything wrong, I literally JUST made an account here, mainly to find a solution to my problem.

I have been looking EVERYWHERE, and me and my co-owner have tried everything to fix this problem.

In my ammotypes.lua, I need to know what to put for the following code, that is supposed to make the M9K/Mad Cow Weapons Ammo type “.45 Ammo” Spawn in. It spawn in, but when you try to pick it up, nothing happens. I probably am not putting the correct name for the ammo, but heres the code:
---------------------The .45 is where im going wrong. I have tried a ton of names for that, but none of them work.

GM:AddAmmoType(".45", “Sniper Ammo”, “models/items/sniper_round_box.mdl”, 80, 30)

Edit:
I saw that this isnt the LUA Coding forums, Im going to put this in the Modding forums.

I’ll help you contact me on steam psn_log404