How do I install BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. In MC Java Mods, or directly above on this page.

What Minecraft version does BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once work with?

The listing gives Minecraft 1.21.1, 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

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BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once

Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.

by Moon

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BackSlot Addon Mod is an addon for the BackSlot Mod. It replaces the ability to hang weapons on the belt with the option to place a second sword or tool on the back, which looks very cool. Currently, the addon specifically replaces the belt slot with an additional back slot. However, in the future, the author may add another slot, allowing players to carry 2 items on their back and one item on the belt. To place a weapon or any tool in the second back slot, press Shift + G or do so from within your inventory.

BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once — Minecraft Java mod, screenshot 1

Screenshots:

BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once — Minecraft Java mod, screenshot 2

BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once — Minecraft Java mod, screenshot 3

BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once — Minecraft Java mod, screenshot 4

BackSlot Addon Mod (1.21.1, 1.20.1) – Use 2 Swords At Once — Minecraft Java mod, screenshot 5

BackSlot Addon Mod Download Links

For Minecraft 1.21.1, 1.21

For Minecraft 1.20.6

For Minecraft 1.20.1, 1.20

For Minecraft 1.19.3

For Minecraft 1.19.2

For Minecraft 1.19

For Minecraft 1.18.2

For Minecraft 1.18.1

For Minecraft 1.17.1

For Minecraft 1.16.5

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.1, 1.20.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: In MC Java Mods, or directly above on this page.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Downloads as 200928.mcaddon
Download size: 30 KB
Download link checked 29 Jul 2026 — working
Mirrored on our own servers — the download does not depend on the original host

These come from our own check of the pack file, not from the source page.

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All Mods for Java All Minecraft Java mods Java mods for 1.21 Java mods for 1.20