Does this version work for you?
- Version 1.1
Allows players to have unlimited ammo for their primary & secondary weapon
*Set what the player has unlimited ammo for - Primary OR Secondary OR Both
*Set whether the player gets more ammo when they fire or whether they have to reload to get more ammo
1. Create folder called unlimited_ammo in /cstrike/addons/ folder and place es_unlimited_ammo.txt inside it.
2. Add es_load unlimited_ammo to your autoexec.cfg located in /cfg/
3. Restart Server