Stun Arm is an upgrade for the prosthetic arm in Metal Gear Solid 5: The Phantom Pain. It is used to incapacitate enemies without killing them, by releasing electricity when you punch.
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If you want to upgrade the battery capacity for it, you need to find a blueprint first. In this guide, we’re going to show you the Stun Arm blueprint location. If you’re looking for another blueprint, you should check out our blueprint list.
The schematic is located in the Serak Power Plant in north-eastern Afghanistan. Go to the building by the mountain, in the far east part of the compound. You’ll find the blueprint on the table inside. If it’s not there, wait for the Side Op 06 – Secure The Stun Arm Blueprint to show up.
You can also follow our video guide, if you prefer moving pictures:
