weighs 1,750 kg and can be installed on various tracked or wheeled vehicles. The turret is stated to be immune to 0.50 caliber armour-piercing rounds at close range (100 meters) and protection is further increased when add-on armour is installed. The turret can traverse 360 degrees and be elevated -40 to +60 degrees. The fire-control system, based on that of HJ-8H, is internally mounted. The primary armament of SW-1 includes four HJ-8H ATGM, with two mounted in the rear location on each side of the turret. The secondary armament comprises a 30 mm main gun and a coaxial 0.30 caliber machine gun. A variety of ammo can be used and the maximum rate of fire of the main gun is around 6 rounds per second, and automatic fire can be selected at various rates. The 30-mm gun is claimed to be effective against ground targets up to 4 km away and aerial targets at 2 km, while the HJ-8H missile is effective against ground targets at ranges of 4 km away, and against low and slow aerial targets at the same range. A follow-on model that is remotely operated weighing 1.4 ton has completed its development and entered Chinese service, designed by the same designer, Wu Lixin (吴立辛). Like its predecessor, this unmanned model was also first tested by using HJ-73C ATGM. The unmanned version carries 160 rounds of 30 mm ammunition. Combat use Bosnia and Herzegovina The Baktar-Shikan variant from Pakistan were supplied to Bosnian government forces in the early 1990s. Used by the Bosnian army forces against Serb tanks during the mid-1990s which helped the Bosniaks to destroy Serb tanks and helped in further combat. Sri Lanka The Sri Lanka Army acquired HJ-8 from China, during the civil conflict against the separatist Liberation Tigers of Tamil Eelam (LTTE). They were mostly used to take out LTTE strucuture, including bunkers. On at least one occasion, during the 2009 Battle of Mullaitivu the Army used these weapons against fast attack craft of the LTTE's Sea Tigers naval wing. Syria Since June 2013, videos showing the use of the HJ-8 by Free Syrian Army rebels against Syrian Arab Army armor have surfaced and have been successful in destroying T-72 tanks. Iraq Since December 2014, videos showing the use of the HJ-8 by the Peshmerga against Islamic State (ISIL) have surfaced. The HJ-8 systems might have been captured from ISIL stockpiles. Pakistan