Ballistic Advantage complete uppers are a popular component for custom AR-15 builds, featuring BA's well-regarded Hanson-profile barrels and Aero Precision-compatible receivers, widely used by home builders. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2014, USA Weight: 28 oz Overall length: 20" Status: Active Intended use: Home Defense, Tactical, Competition