The MCX Virtus Pistol configuration with 11.5-inch barrel and pistol brace — a legal alternative to the SBR configuration that does not require NFA registration. Offers identical performance to the SBR variant with compliant pistol classification. Type: Pistol Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2017, USA Weight: 6.2 oz Overall length: 28.5" Status: Active Intended use: duty, home_defense