The Sig Sauer MCX Spear 6.8x51mm is a usa-made semi-automatic rifle chambered in 6.8x51mm, introduced in 2022. Primary use: sport, self_defense. Type: Rifle Action: Semi-Automatic Caliber: 6.8x51mm Capacity: 20 Year introduced: 2022, USA Weight: 112 oz Overall length: 32" Status: Active Intended use: sport, self_defense