M982 Excalibur
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The M982 Excalibur is a 155 mm extended-range guided artillery shell developed in a collaborative effort between the U.S. Army Research Laboratory and the United States Army Armament Research, Development and Engineering Center. Wikipedia
Accuracy: 4 m (13 ft) CEP
Caliber: 155 mm
Effective firing range: Increment Ia-1: 23 km (14 mi); Increment Ia-2/Ib: 40 km (25 mi); From Archer: 50 km (31 mi); newest test: 70 km
Guidance system: GPS, inertial navigation
Length: 100 cm (39.2 in)
Manufacturer: BAE Systems AB: Bofors; Raytheon Missiles & Defense
Mass: 48 kg (106 lb)