WE-Tech Big Bird Magazine Rebuild Kit – Color-Coded O-Ring Replacement Kit for GBB Pistols

$8.00 USD Save $-8.00 USD

Fix Your Leaky Big Bird Airsoft Mags – Fast & Easy
Free U.S. Shipping | Buy 2 Get 1 Free on All O-Ring Kits!

Struggling with leaks in your WE Big Bird GBB mags? This complete O-ring rebuild kit is designed specifically for WE-Tech Big Bird green gas magazines, providing a fast, affordable way to restore gas retention and reliability.

• Fixes common leaks in Big Bird gas blowback magazines

• Color-coded O-rings eliminate guesswork during install

• Made from high-quality NBR rubber for durable, gas-tight sealing

• Includes step-by-step video and visual diagram for easy DIY repair

Each kit is tailored to fit the WE Big Bird magazine for a smooth install, even if it’s your first time.

Compatible GBB Models:

• WE-Tech Big Bird Green Gas Magazine

Looking for another kit? Check our full catalog or visit the Contact Us page to request support for your mag.

Below is our Installation video.

If you have any questions or concerns, please reach out.