and likely has been cancelled. In total only 5 prototypes were made, four with standard 18-inch barrels, and one with a longer heavy marksman barrel and a 20-round magazine. In 2012 the American company PJA obtained the 5 original prototypes from Steyr and reverse engineered them in order to produce a US-made AUG A3-CQC and conversion kits. AUG HBAR The Steyr AUG HBAR (Heavy Barreled Automatic Rifle) is a longer heavier-barreled variant of the standard AUG for use as a light machine gun or squad automatic weapon. It uses the standard AUG receiver with 1.5× magnification scope. It can be modified to fire from an open bolt to allow sustained fire. To accomplish this, a modified bolt carrier, striker and trigger mechanism with sear are used. The Steyr AUG HBAR-T (Heavy Barreled Automatic Rifle-Telescope) is a designated marksman configuration of the HBAR that features a special receiver with a STANAG scope mount system usually fitted with a Schmidt & Bender 4x25, or a Kahles ZF69 6×42 optical sight. AUG Para The Steyr AUG Para also known as the AUG SMG or AUG 9mm, is a submachine gun variant of the AUG chambered in 9×19mm Parabellum cartridge and has been produced since 1988. It differs from the rifle variants by having a different barrel, bolt and magazine. It is an automatic, blowback-operated model that fires from a closed bolt, and does not use the rifle's gas system. Unlike the rifle variants, it has a unique barrel with six right-hand grooves at a 250 mm (1:9.8 in) rifling twist rate, with a recoil compensator, a slightly different charging handle and a magazine well adapter enabling the use of proprietary 25-round box magazines. The original design of the AUG 9mm, known as the MP88, used Steyr MPi 69 magazines. A conversion kit used to transform any assault rifle configuration into the submachine gun configuration is also available. The conversion kit consists of a barrel, bolt, adapter insert and magazine. The Steyr AUG A3 Para XS is a 9mm variant of the AUG A3. It features a barrel and a Picatinny rail system. The Steyr AUG 40 is a .40 S&W variant of the AUG Para that uses Glock compatible double stack .40 S&W magazines. Civilian variants The Steyr AUG P is a semi-automatic only variant of the AUG A1, available to the civilian and law enforcement markets. It features a shorter, barrel and