KWA KMP9 & Umarex/Beretta PMX Magazine Rebuild Kit – Color-Coded O-Ring Replacement Kit for GBB SMG

$10.00 USD Save $-10.00 USD

Fix Your Leaky KMP9/PMX Airsoft Mags – Fast & Easy
Free U.S. Shipping | Buy 2 Get 1 Free on All O-Ring Kits!

Struggling with leaky KMP9/PMX magazines? Our complete color-coded O-ring rebuild kit is a reliable, affordable solution for restoring your KWA KMP9 AND Umarex/Beretta PMX SMG Magazines to peak performance.

• Fixes common gas leaks in both KMP9 and PMX GBB SMG mags

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

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

Each kit is engineered specifically for KWA KMP9 AND Umarex/Beretta PMX Green Gas magazines, making installation simple—even for first-time users.

Compatible GBB Models:

• KWA KMP9
• Umarex/Beretta PMX

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

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