PISTOL: BRIGADE FIREARMS MODEL BF-15 PISTOL, SERIAL NUMBER BRF 41759, SEMI - AUTOMATIC, 5.56 MM, 2- TONE, CASE NOT INCLUDED, 5" Notes: Brigade Firearms BF-15 5.56MM Pistol Description: Type: AR-15-pattern firearm chambered in 5.56mm and configured as a pistol. Configuration: Compact firearm based on the AR-15 platform. Purpose: Intended for lawful civilian sporting and recreational use. Design: Modular platform with a contemporary configuration. Summary: The Brigade Firearms BF-15 5.56MM Pistol is an AR-15-pattern firearm chambered in 5.56mm and configured as a pistol, intended for civilian sporting and recreational applications.