Sig Sauer / SIG AIR & ProForce M17/M18 Magazine Rebuild Kit - Complete O-Ring Replacement Kit

Roach Custom LLC

$8.00 USD

Available Now!

Fix Your Leaky SIG M17/M18 Airsoft Mags – Fast & Easy
Free U.S. Shipping | Buy 2 Get 1 Free on All O-Ring Kits!

 

Struggling with leaky SIG GBB magazines? Our complete color-coded O-ring rebuild kit is the fast, affordable solution to restore your SIG AIR / ProForce M17 and M18 green gas magazines to peak performance.

  • Fixes common gas leaks in SIG M17/M18 GBB mags

  • Color-coded O-rings = no guesswork during install

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

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

Each kit is precisely matched to the magazines listed, ensuring a smooth, hassle-free installation—perfect even if it's your first time doing a rebuild.

Compatible Model(s):
SIG AIR / SIG ProForce M17
SIG AIR / SIG ProForce M18

 

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