Editing Pump paintball (section)

=== Stock-class paintball ===

'''Stock-class paintball''' is a restricted form of manually operated paintball intended to reproduce aspects of the sport's earliest equipment and playing conditions.

Traditional stock-class rules generally require:

* A manually operated pump-action or bolt-action marker.
* A horizontal ammunition feed tube positioned parallel to the barrel.
* A single disposable 12-gram CO2 cartridge as the propellant source.
* A restricted ammunition capacity, commonly 10 to 20 paintballs.

With a horizontal feed tube, players typically tilt the marker to allow a paintball to enter the breech before completing the loading cycle. This technique is commonly called ''rock and cock''.

Exact equipment requirements vary between competitions.

For example, the Pan Am Circuit's 2002 rules permitted horizontal feed tubes holding up to 20 paintballs and specified requirements for the CO2 cartridge-changing mechanism.[6]

Historical stock-class rules published by the Stock-Class Paintball Network also permitted certain vertical-feed arrangements with a 10-paintball capacity.[8]