A special type of ballistic weapon built for a variable fighter that uses electromagnetic rails to propel projectiles to maximum acceleration (see Rail Gun/Cannon). The SSL-9B Dragunov Semi/Fully-Automatic Anti-Armor Sniper Rifle is a common example of this type of heavy weapon designed for long-range precision shooting. Such sniper rifles were used for variable fighters such as the VF-171 Nightmare Plus and the VF-25G Messiah. The SSL-9B rifles feature targeting assist balancers that deploy prior to firing and grant the weapon an impressive error margin of less than 10 centimeters at a firing distance of 20 kilometers. The Dragunov sniper rifle fires SP-55X 55mm ultra-high-speed armor-piercing ammunition boosted by electromagnetic rails (ultra-hard-metal jacketed, ultra-dense alloy bullets) that is propelled at an initial muzzle velocity 6,200 m/s, or 7,490 m/s when fired in space.