Dedicated Sig Sauer MPX MCX HPA Air Upgrade is a bespoke kit to convert your Sig Sauer MCX or MPX to run on High Pressure Air (HPA).

HPA Air Upgrade Kit includes:

• HPA adaptor
• 13Ci 3000PSI bottle
• Butt stock
• Quick coupler socket for filling

Now supplied with with a 1100 psi output regulator.

With all of the components included in one low cost package, all you need is a dive cylinder or stirrup pump to fill the tank. No additional parts will be required to complete your conversion. Weighing in at only 650g there is hardly any difference when compared to a full 88g cartridge and the standard butt-stock.

It is recommended that two drops of silicone oil should be placed into one of the holes in the bottle adaptor between recharges to maintain good internal lubrication of the action. Do not over lubricate.

The Sig Sauer air weapons weapons were designed for use with Co2, and the operating pressure of Co2 varies greatly. Co2 @ 22ºC is approx 855PSI, Co2 @ 30ºC is approx 1050PSI. The regulators are fitted with a Burst Disk on both the Low and High pressure side of the regulator. In the highly unlikely event of the regulator failing, the low pressure (1.8KPSI) burst disk would rupture and vent the bottle contents through the Burst Disk Port. It is commonplace in industry to use Regulated High Pressure Air bottles in Co2 applications, as the gas is far more stable under changes in temperature.

Please note: you may invalidate the manufacturer warranty on your air gun in fitting this upgrade, and do so at your own risk.

Best Fittings product code: 88S3-HP03