.50 BMG cartridge is also produced commercially in a wide range of specifications, including armor piercing, tracing, and incendiary. Cartridge, caliber .50, tracer, M1 This tracer is used for observing fire, signaling, target designation, and incendiary purposes. This bullet has a red tip. Cartridge, caliber .50, incendiary, M1 This cartridge is used against unarmored, flammable targets. The incendiary bullet has a light blue tip Cartridge, caliber .50, ball, M2 This cartridge is used against personnel and unarmored targets. This bullet has an unpainted tip. Cartridge, caliber .50, armor piercing (AP), M2 This cartridge is used against lightly armored vehicles, protective shelters, and personnel, and can be identified by its black tip. Cartridge, caliber .50, armor-piercing incendiary (API), M8 This cartridge is used, in place of the armor-piercing round, against armored, flammable targets. The bullet has a silver tip. Cartridge, caliber .50, tracer, M10 Tracer for observing fire, signaling, target designation, and incendiary purposes. Designed to be less intense than the M1 tracer, the M10 has an orange tip. Cartridge, caliber .50, tracer, M17 Tracer for observing fire, signaling, target designation, and incendiary purposes. Can be fired from the M82/M107 series of rifles. Cartridge, caliber .50, armor-piercing incendiary tracer (API-T), M20 This cartridge is used in place of the armor-piercing round against armored, flammable targets, with a tracer element for observation purposes. This cartridge is effectively a variant of the M8 armor-piercing incendiary with the added tracer element. Can be fired from the M82/M107 series of rifles. This bullet has a red tip with a ring of aluminum paint. Cartridge, caliber .50, tracer, headlight, M21 Tracer for use in observing fire during air-to-air combat. Designed to be more visible, the M21 is three times more brilliant than the M1 tracer. Cartridge, caliber .50, incendiary, M23 This cartridge is used against unarmored, flammable targets. The tip of the bullet is painted blue with a light blue ring. Cartridge, caliber .50, ball, M33 This cartridge is used against personnel and unarmored targets. Can be fired from the M82/M107 series of rifles. Cartridge, caliber .50, saboted light armor penetrator (SLAP), M903 This cartridge has a 355 – 360 gr (23.00 – 23.33 g) heavy metal (tungsten) penetrator that is sabot-launched at a muzzle velocity of 4,000 ft/s (1,219 m/s). The 0.50 in (12.7 mm) diameter sabot is designed to separate after leaving the muzzle, releasing the 0.30 in (7.62 mm) penetrator. The sabot is