Club Numbering PXG’s unique club numbering system references the Marine Corps’ Military Occupational Specialty (MOS) system and is a tribute to the brave men and women who serve in the United States Marine Corps. IRONS & WEDGES - MOS 0311 MOS 0311 Rifleman: The riflemen employ the M16A2 service rifle, the M203 grenade launcher and the squad automatic weapon (SAW). Riflemen are the primary scouts, assault troops and close combat forces available to the Marine Air Ground Task Force. LEARN MORE DRIVER - MOS 0811 MOS 0811 Field Artillery Cannoneer: As a member of a field artillery howitzer battery, cannoneers prepare artillery pieces and equipment for movement, combat and firing. LEARN MORE FAIRWAY WOODS - MOS 0341 MOS 0341 Mortarman: Mortarmen are responsible for the tactical deployment of the 60mm light mortar and the 81mm medium mortar. Mortarmen provide indirect fire in support of the rifle and LAR squads/platoons/companies and the infantry and LAR battalions. LEARN MORE HYBRIDS - MOS 0317 MOS 0317 Scout Sniper: The scout sniper is skilled in field craft and marksmanship that delivers long range, precision fire on selected targets from concealed positions in support of combat operations. LEARN MORE What Do the Numbers Mean? The PXG Numbering System is inspired by the Marine Corps.