| Brand | FPS Softair |
|---|
Check the listing for details. FPS CNC ERGAL X-Ring and O-Ring Ball Bearing AEG Piston Head Pressure Deviation. Condition: New. Listed at 19.99 USD. XPAE new version with X-RING and one piece plastic shim for AOE. The X-RING can be used for ~30 bbs/second, but the power of the replica should not exceed more than 1 joule for high rates of fire. If the rate of fire is high AND the power output is high, consider a regular Viton O-ring.