Guns Modify Extreme Custom Magazine Lip Rubber Seal for Tokyo Marui G Series Gas Mag (#3 +0.25 or +0

Guns Modify Extreme Custom Magazine Lip Rubber Seal for Tokyo Marui G Series Gas Mag (#3 +0.25 or +0.30 / 70 inch) Rubber Made Smoother internal transition improves gas flow Suitable for Tokyo Marui G Series Airsoft Gas Blow Back GBB Pistol Magazine (#3 +0.25 or +0.30 / 70 inch)