For magfed paintball / Airsoft guns requiring a lightweight, compact compressed air tank for use as a shoulder stock, This 13/3000  air tank pushes air at 800psi and is ideal for tactical paintball Airsoft setups where accuracy is much more important than volume! User serviceable, rebuildable and reliable, the Valken 2.0 regulator and 13 cubic inch bottle combine to create a consistent, reliable, compact and lightweight air source for paintball / Airsoft guns or HPA airsoft rigs!
 
According to 49CFR 180.207, re-test year for a compressed air aluminum cylinder is 10 years and for CO2 is 5 years. There is no expiry date for these cylinders as long as they pass the retest requirements as shown.
 
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Each UN pressure receptacle that becomes due for periodic requalification must be requalified at the interval specified in the following table: 
 
Interval (years)
UN pressure receptacles/hazardous materials
10
Pressure receptacles for all hazardous materials except as noted below (also for dissolved acetylene, see paragraph (d)(3) of this section):
5
Composite pressure receptacles.
5
Metal hydride storage systems
5
Pressure receptacles used for:
All Division 2.3 materials.
UN1013, Carbon dioxide.
UN1043, Fertilizer ammoniating solution with free ammonia.
UN1051, Hydrogen cyanide, stabilized containing less than 3% water.
UN1052, Hydrogen fluoride, anhydrous.
UN1745, Bromine pentafluoride.
UN1746, Bromine trifluoride.
UN2073, Ammonia solution.
UN2495, Iodine pentafluoride.
UN2983, Ethylene Oxide and Propylene oxide mixture, not more than 30% ethylene oxide.