BL4 AutoReload

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BL4 AutoReload adds four selectable reload behaviors to Borderlands 4 while keeping the game's native reload logic, helping eliminate the built-in delay before a reload starts on zero ammo.

Instead of replacing or simulating the reload itself, the mod asks the game to start its normal reload. This preserves normal reload animations, reload speed, bonuses and interruption behavior.

Available modes

Auto Reload - All Weapons

Automatically starts a reload when the magazine of a supported weapon becomes empty.

Auto Reload - Jakobs Only

The same behavior, limited to Jakobs weapons.

Empty Fire Reload - All Weapons

Does not automatically reload when the last round is fired. Reload begins only when Fire is pressed again while the magazine is already empty.

Empty Fire Reload - Jakobs Only

The same empty-fire behavior, limited to Jakobs weapons.

Features

• Four selectable native reload behaviors.
• Behavior can be changed from the in-game mod settings and is saved between sessions.
• Empty Fire modes automatically follow the current Action_Fire bindings.
• Supports keyboard/mouse and gamepad fire bindings.
• Refreshes fire bindings after control mappings are rebuilt.
• Handles weapons with separate primary and secondary fire ammo pools by following the active CurrentUseModeIndex.
• Ignores stale ammo replication events from inactive fire modes.
• Uses the game's native reload request instead of externally simulating a reload.

Requirements

• Borderlands 4
• BL4 PythonSDK / Oak2 Mod Manager

Use the official BL4 SDK / Oak2 installation guide for SDK installation and updates.

Installing the mod

1. Install or update BL4 PythonSDK / Oak2 using the official guide above.
2. Download BL4_AutoReload.sdkmod from GitHub Releases or Nexus Mods.
3. With Borderlands 4 closed, copy the .sdkmod file intact to Borderlands 4\sdk_mods\. Do not extract the .sdkmod itself.
4. Start the game, open the Mods menu, enable BL4 AutoReload and select the desired Behavior.

To update BL4 AutoReload, replace the existing .sdkmod with the newer file and restart the game.

Do not enable older standalone auto_reload_* or empty_fire_reload_* mods at the same time as BL4 AutoReload.

How it works

The mod uses the game's native reload request:

ServerStartReloading(CurrentUseModeIndex, 0)

Normal reload animation, reload speed, perk effects and standard interruption behavior are therefore preserved.

Compatibility and license

• Co-op support: Unknown — behavior with the mod installed only on a client while the host does not have it has not yet been validated.
• The mod does not replace weapon animations or modify reload speed values.
• License: GNU GPLv3 with Section 7 additional provenance terms

Credits

Development: Sol / GPT-5.6 Sol
Design, testing & QA: Last1SiN

BL4 PythonSDK / Oak2 Mod Manager: created by apple1417, with contributions from the BL-SDK project and contributors.