Brand: KSC

Model: MP9 Aircraft Piston Gas Chamber O‑ring

Material: High‑quality Nitrile Rubber (NBR) / Silicone (depending on variant)

Compatible with: KSC MP9 Gas Blowback Submachine Gun (System 7)

Weight: <1g (single O‑ring)

Dimensions: Standard piston gas chamber O‑ring size (~8–10mm inner diameter, ~2mm thickness)

System: KSC MP9 Aircraft Piston Gas Chamber O‑ring designed as a replacement sealing component for the MP9 GBB system. Constructed from durable nitrile or silicone rubber to ensure airtight sealing and consistent gas flow. Prevents leakage in the piston chamber, improving efficiency, FPS stability, and overall reliability. Essential maintenance part for restoring performance in worn or leaking MP9 gas systems.