How to unlock infinite ammo in Resident Evil 5 and turn it on
Complete the campaign, upgrade a supported weapon, buy its bonus and enable the required settings.
Resident Evil 5’s 2009 main campaign and its PC Steam release. Gold Edition side stories and Mercenaries variants are outside scope. Publisher pictures depict the core Chris and Sheva campaign; platform-specific co-op setup is not covered.
Finish the main campaign once

The normal route starts by completing the campaign on any difficulty. A fully upgraded gun alone is not enough to use the postgame infinite-ammunition bonus during an unfinished first run. Keep your clear data and return to the Play Game menus after the ending so the completion unlocks and Bonus Features are available.
Fully upgrade the specific supported weapon
Spend money on every available upgrade for the firearm you want to use. Each supported gun has its own unlock; completing one handgun does not grant unlimited bullets to every handgun. Choose a weapon you enjoy and can afford to finish, then confirm all its upgrade categories are complete in Item Management.
Buy its infinite-ammo bonus with exchange points
Open Bonus Features and purchase the corresponding infinite-ammo entry with the points earned from play. These points are a separate resource from the money spent on weapon upgrades. If the entry is still unavailable, recheck both the campaign completion requirement and that exact weapon’s upgrades before grinding more points unnecessarily.
Enable the bonus and allow it for the session
Turn Infinite Ammo on in Special Settings, then ensure the chapter or network session settings permit it when starting play. Carry the weapon whose bonus you purchased. If ammunition still decreases, check those settings and the weapon name first. The rocket launcher uses a separate speed-clear unlock, so it should not be used to test this standard upgrade route.
More Resident Evil 5 quick answers
Resident Evil 5 inventory guide: nine slots, herbs and shared healingThe grenade launcher does not use this standard infinite-ammo purchase route; check a supported firearm first.
Picture details
Game artwork belongs to its respective rights holders.
