The Gamo Swarm Magnum is a 10-shot semi-automatic repeating break-barrel air rifle using Gamo's 10X Quick-Shot rotary magazine technology. IGT Mach 1 gas piston, CAT adjustable trigger, and a tactical synthetic stock. The first production break-barrel to offer a multi-shot magazine. Type: Rifle Action: Spring Piston Caliber: 177 Cal Capacity: 10 Year introduced: 2019, Spain Weight: 105.6 oz Overall length: 48.1" Status: Active Intended use: pest-control, hunting, backyard