Tokyo Marui FN57 Magazine Rebuild Kit - Color-Coded O-Ring Replacement Kit for Green Gas GBB Pistols

$8.00 USD Save $-8.00 USD

Fix Your Leaky FN-57 Airsoft Mags – Fast & Easy
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Tokyo Marui FN-57 Magazine Repair Kit

Struggling with leaky FN-57 magazines? Our complete color-coded O-ring rebuild kit is a reliable, affordable solution for restoring your Tokyo Marui FN-57 green gas magazines to peak performance! 

• Fixes common gas leaks in FN57 GBB mags

• Color-coded O-rings = zero guesswork during install

• Made from durable NBR rubber for high-pressure gas seal

• Includes step-by-step video + diagram for easy DIY repair

Each kit is engineered specifically for Tokyo Marui FN57 Green Gas magazines, making installation simple—even for first-time users.

Compatible GBB Models:

• Tokyo Marui FN-57 GBB magazines

Need support for another mag? Hit up our Contact Us page—we’re expanding our lineup constantly.

Below is our Installation video. 

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