Rated 5 stars over 5, this HPA tank come with a high capacity of 3,000 psi as max fill to top up your SIG SAUER MCX or MPX air rifle.  The tank’s easy on/off quick disconnect fittings allow for convenient filling using any high pressure source.  The regulator attached to the tank will then reduce that pressure to 1,100 PSI before it enters the gun.  These tanks tend to weight heavier on your wallet but they are definitely a beneficial long-term investment.   HPA is said to be relatively temperature-independent and more consistent versus CO2 gaining you in accuracy and performance. 

Features:

• Air Venturi 13 Oz Aluminum HPA Tank
• Regulated to 1,100 psi
• Max fill is 3,000 psi
• Fill directly from a high pressure pump or tank via standard foster quick fill adapter
• Integrated pressure gauge
• Two ASTM compliant burst disks
• Buttstock
• CO2 adapter
• Shoot hundreds of rounds before refilling
• 2" diameter
• 10" long
• Includes: buttstock, CO2 adapter