GCO Weapon attachment in Rust: How to unlock and use guide 

The GCO Weapon attachment in Rust is a brand-new addition to the in-game weapon modification toolkit. This powerful cutting-edge experimental weapon attachment can significantly improve a player's experience of running Tier-2 weaponry in the game. The attachment comes with a few pros and cons, and before stepping into the competitive ground, it's best to assess its performance and uses.

This article will provide a step-by-step guide to unlocking this attachment and a detailed guide.

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How to unlock GCO Weapon attachment in Rust

The GCO Weapon attachment in Rust is locked behind the Level 2 Workbench. Players can unlock this item in two ways:

1. Progressing through the Level 2 Workbench Tech-tree.
2. Searching for the item and then researching it.

This item costs 10 HQM to craft and works great for most Tier-2 weapons in-game. That said, let's explore the unlock guide in depth.

1) Progressing through the Level 2 Workbench Tech tree

Unlocking the GCO (Gas Compression Overdrive) Weapon attachment by progressing through the Level 2 Workbench Tech tree is not a strategy we recommend to solo players or those who play in small groups. The Workbench Tech tree has a 10% unlock fee, and with how valuable Scrap is after force-wipe, most players should opt for the second option.

However, playing in large groups can ensure swift progress through the step-by-step unlock ladder within the Level 2 Workbench, which may help in obtaining this item.

GCO attachment being used in different weapons in Rust (Image via Facepunch Studios)

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2) Searching for the item and then researching it

For most players, the ideal way to get this item would be to stumble upon it through loot crates. Being an item from the Level 2 Workbench, you can obtain this attachment by looting Miltary Crates and Elite Crates. We suggest you consistently tackle higher tier monuments, such as Launch Site, or Oil Rig, and sooner or later you will locate this item.

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How to use GCO Weapon attachment in Rust

The GCO Weapon attachment in Rust significantly improves damage and bullet velocity in weapons. It is perfect for those looking to improve their weapon's damage numbers at the cost of lowering its fire rate. This attachment greatly boosts projectile damage and velocity, allowing players to dish out a chunk of damage in split seconds.

It's a great tool for early-game combat when players are equipped with low-quality, highly penetrable armor. Use it to enhance your weapon damage and overpower opponents.

Lastly, the GCO Weapon attachment is only compatible with the Thompson SMG, Semi-auto Rifle, Semi-auto Pistol, M92 Pistol, M39 Rifle, and Custom SMG. Use it for your semi-auto weapons over the SMGs in-game.

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