The SIG Sauer MCX Virtus Pistol with 11.5-inch barrel offers the full MCX Virtus feature set in a pistol-classified configuration with folding brace, providing SBR-like compactness without NFA registration. Type: Pistol Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2018, USA Weight: 6.5 oz Overall length: 28.5" Status: Active Military use: Yes Intended use: Home Defense, Tactical