With the enormous growth in popularity of pistol caliber carbines,   has entered the market with its new USA-made BAR9. One of the most interesting aspects of the BAR9 is that it accepts the same magazine as a double stack Glock® double stack pistols. This allows users to carry two types of guns – a sidearm and an AR pistol – and effortlessly interchange the same magazine between them. This brings a new level of convenience to law enforcement and civilian users alike.