The army consists of 495,000 troops, approximately 2,400-2,500 tanks, 2,700 armored fighting vehicles, 5,800 artillery pieces, 60 guided missile systems, and 600 helicopters as of 2014. Main battle tank types include: 880 M48 Patton series and its upgrades such as M48A3K, M48A5, and M48A5K, 33 Soviet T-80U and 2 T-80UK (given by Russia to pay off debt), as well as 1,524 K1A1 and K1 tanks, which bear a 120 mm smoothbore gun and are of local manufacture. The future replacement for the K1 and K1A1 MBTs has been named the K2 Black Panther (흑표;黑豹 Heukpyo), which will be fitted with a 1500 hp MTU-based engine, 55-caliber 120 mm main gun with autoloader. The new tank will also feature radar equipment as well as all-bearing laser detection and defense systems, anti-missile active protection, and heavy reactive armor and sensor package comparable to the American M1A2 Abrams and German Leopard 2A6. The ROK Army is planning to field approximately 390 Black Panthers.