This rapid reload technology avoids double loading a pellet the magazine rotates and inserts a pellet into into the breech using the inertia of the recoil when shooting the air rifle. - Caliber: .22 - Capacity: 10 rounds. - Types: Multi-shot Magazine - Fitting: The magazine is designed only for the GAMO Swarm Magnum 10X GEN2 - Other Specs: Empty magazine indicator. High impact polymer case. Number of shots left indicator. Rotor numbered. Smooth indexing. - Ammunition: Any .22 Cal. Pellet.