articleFormer Orlando Magic Guard and current Dallas Mavericks assistant coach, Darrell Armstrong, was arrested in Dallas, according to reporting done by FOX 4 and the Dallas Police Department. The investigation revealed that 56-year-old Armstrong hit his girlfriend with a gun and threatened to shoot her while the two were arguing. What they're saying:Officials with the Dallas Mavericks released the following statement on Sunday afternoon:"The Dallas Mavericks are aware of an incident involving a member of our staff and are gathering all relevant information surrounding the incident. NBA BackgroundTimeline:Darrell Armstrong played in the NBA for 14 seasons before becoming an assistant coach for the Dallas Mavericks in 2009. ORLANDO - MAY 10: Darrell Armstrong #10 of the Orlando Magic speaks to the media after winning the Sixth Man of the Year award on May 10, 1999 at TD Waterhouse Arena in Orlando, Florida.