The Full-Auto Upgrade is one of the worst attachments in the game, as it heavily reduces the CZ-75's performance in several aspects. It decreases the CZ-75's maximum damage from 40 to 30, making the CZ-75 take at least 4 bodyshots to kill. The recoil of the CZ-75 is severely inflated, making it hard to stay accurate during automatic fire. The CZ-75's range is also shortened considerably. On top of that, the main benefit of this attachment - fully automatic fire - is a hindrance in disguise, as the CZ-75 can only fire at 535 RPM with this attachment, whereas a semi-automatic CZ-75 can shoot faster than that, up to 625 RPM with a good enough trigger finger.
Like with the other attachments on the CZ-75, the Full-Auto Upgrade will make the CZ-75's switch speeds longer.
Under almost all circumstances, the Full-Auto Upgrade should never be used. The price players must pay to fire the CZ-75 in a fully automatic configuration is way too steep to justify its usage. Players are better off simply firing the CZ-75 semi-automatically.
- Full-Auto and Rapid Fire have the same Create-a-Class icon.