This is the closest I can get for a secondary script for Cobray M11/9 (Ingram from Max Payne). Since, this script use 30 rounds. Fortunately IRL, there is 30 round magazine for Cobray M11/9

Link: https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2397389081&searchtext=ingram

Secondary and primary weapons of the same gun can not both be enabled in the game at the same time or you'll run into issues.

You'll need to have this in order to work with all survivors:

"CharacterViewmodelAddon"
{
"Coach" "models/weapons/arms/v_arms_coach_new.mdl"
"Mechanic" "models/weapons/arms/v_arms_mechanic_new.mdl"
"Producer" "models/weapons/arms/v_arms_producer_new.mdl"
"Gambler" "models/weapons/arms/v_arms_gambler_new.mdl"

"Manager" "models/weapons/arms/v_arms_louis.mdl"
"Biker" "models/weapons/arms/v_arms_francis.mdl"
"TeenGirl" "models/weapons/arms/v_arms_zoey.mdl"
"NamVet" "models/weapons/arms/v_arms_bill.mdl"
}

Ok. I was just looking at them. It may be the "Tier" listing in the script but I'm not positive.

you don't need to, I'll just compare your script and the original

It's been years since I modded L4D2. It's a simple setting in the script. Let me figure out how I did it and I'll get back to you.

damn, if I had points, I'd fuckin like Give you Hooker Points

Another tidbit for those that may not know, ammo type determines quantity.

How do you make the script for the MP5 so that it is a secondary weapon

The MP5 is already in the game. Due to regional conflicts, I took the MP5, Sig and PSG off of the workshop. Probably the same reason the devs disabled them in the game to begin with.

can you make one of these for the mp5? how did you do it, I know about scripts and I can mimic your mods that make weapons as secondary

You are mistaken. I just tested it and it works fine. I suggest you deconflict your mods.

Not working as of now