The Sig Sauer MPX PCP Series .22 Caliber 8-Round Air Magazine is a factory replacement magazine engineered specifically for the Sig Sauer MPX PCC .22 Caliber PCP air rifle. Constructed with a durable polymer housing, this drop-free magazine fits directly into the rifle's magwell to feed ammunition to the action. It operates using an auto-advancing 8-round rotary cylinder mechanism to smoothly cycle .22 caliber pellets. Designed for convenience during extended range sessions, the magazine body also features a built-in internal storage compartment that holds three additional spare 8-round cylinders.