Killing Floor 3 has a lot of tools for players to use to help them survive the harder waves or higher difficulties that have a lot of stronger enemies. Some of these tools are locked behind leveling up specific characters to get better perks or just upgrading your weapons, but one tool players can take advantage of right are are turrets.
Turrets are activated by multi-tools, though it’s not immediately clear where you can get them. Multi-tools can also be used to open Armor Lockers, which are used to resupply the durability of your armor, which is also very useful. Here’s how to get and use Multi-tools in Killing Floor 3 to activate turrets and open Armor Lockers.
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Multi-tools are optional tools that can be purchased and equipped on your loadout or purchased from traders between rounds using Dosh. Either way, you’ll need Dosh, but the Operational Budget of every character should be just high enough for you to choose bringing Multi-Tools instead of whatever your character’s set tool is. If you’re in a round and in need of a Multi-tool, your only option is to wait between rounds and run to the active trader to buy one for 240 Dosh.
If you still have another tool that hasn’t been used, it will be sold to help with the cost of the Multi-tool.

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Once you have a Multi-tool, it will have three potential uses:
- Activate a Zipline.
- Activate a Turret.
- Open an Armor Locker.
Each Multi-tool has three uses, which can be used in whatever combination of the things above you wish. What you use it on may also be determined by the map and what objectives you’re trying to get there, as not all of the things listed above have the same frequency in each map. To use a Multi-tool, simply approach one of the three devices above, and you’ll be prompted to use your Multi-tool to activate it.
What is the Best Use for a Multi-Tool?
By far, the best use is to activate a turret. While they only shoot in about 180 degrees in front of them, they are great at killing almost all kinds of zeds, and their duration is determined by bullets fired, so you’ll know you’re getting the most out of activating them. After a turret has shot all its bullets, there will be a cooldown until it activates again. Armor Lockers can also be useful as they can be cheaper than paying to refill your armor, but there is nothing you can buy at the trader that adds another automatic gun to shoot incoming enemies.

Killing Floor 3
- Released
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July 24, 2025
- ESRB
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Mature 17+ / Intense Violence, Blood and Gore, Strong Language
- Engine
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Unreal Engine 5
- Multiplayer
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Online Co-Op
- Cross-Platform Play
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All platforms