The GP100 in 10mm Auto fills the gap between .357 Magnum and .44 Magnum for handgun hunters and outdoor enthusiasts who want semi-auto cartridge compatibility with revolver reliability. Uses full-moon clips to headspace the rimless 10mm Auto cartridge in the cylinder. The 4.2-inch semi-lug barrel is the only factory configuration available. Full-moon clips enable fast reloading. Type: Revolver Action: Double-Action Caliber: 10mm Auto Capacity: 6 Year introduced: 2020, USA Weight: 40 oz Overall length: 9.5" Status: Active Intended use: hunting, outdoor, sporting, self_defense