M982 Excalibur

M982 Excalibur
Name	M982 Excalibur
Caption	An M982 Excalibur round.
Type	Global Positioning System-guided extended-range projectile
Origin	United States
Used by	See #Operators
Designer	Raytheon
Design date	1992
Manufacturer	Raytheon
Unit cost	$68,000–$176,000
Production date	2007–present
Variants	See #Variants
Weight	48 kg (106 lb)
Length	0.9 m (3 ft)
Diameter	155 mm (6.1 in)
Cartridge	155 mm
Velocity	827 m/s (2,713 ft/s)
Range	40–50 km (25–31 mi)
Guidance	GPS/INS
Accuracy	<10 m (33 ft) CEP
Filling	High-explosive
Filling weight	22 kg (48.5 lb)
Detonation	Point detonating, delay

M982 Excalibur is a family of Global Positioning System-guided, extended-range projectiles fired from 155 mm howitzers. Developed by Raytheon Technologies for the United States Army and the United States Marine Corps, it provides precision strike capability against high-value targets with minimal collateral damage. The munition represents a significant evolution in indirect fire systems, transitioning traditional area bombardment to a surgical tool.

Overview

The program was initiated to address the need for a first-round, fire-for-effect capability that could reduce the logistical burden and increase the survivability of friendly forces. It integrates with existing M777 and M109A6 Paladin platforms, as well as allied systems like the Archer and PzH 2000. Its deployment has influenced modern doctrine, particularly in counter-battery operations and close support in complex environments like urban terrain.

Development

Development began in 1992 under a DARPA and ARDEC program, with Raytheon selected as the prime contractor. Early testing faced challenges with guidance system reliability and cost overruns. A key partnership with Bofors Defense (later part of BAE Systems) helped refine the base 155 mm shell design. The projectile achieved Initial Operational Capability with the United States Army in 2007, following extensive trials at Yuma Proving Ground.

Design and capabilities

The projectile uses a GPS-aided Inertial Navigation System for guidance, receiving target coordinates mid-flight via a programmable fuze setter. Its canard control fins provide maneuverability, enabling a near-vertical terminal descent for increased effectiveness against fortified positions. The warhead contains both PBXN-9 explosive and pre-formed fragments for anti-materiel effects. Compatibility with MACS propellant allows for optimal range performance from various howitzer types.

Operational history

It was first deployed in combat by the United States Army in Iraq in 2007, supporting operations in Basra and Sadr City. The United States Marine Corps utilized it extensively during the War in Afghanistan, notably in Helmand Province. The Swedish Armed Forces employed it during their rotation with the ISAF. More recently, it has been supplied to the Armed Forces of Ukraine for use against Russian targets in the Russo-Ukrainian War, including during the Battle of Bakhmut.

Variants

* Excalibur Ib: The baseline production model with a unitary warhead and improved GPS receiver for enhanced anti-jam performance. * Excalibur Ia-2: A cost-reduced variant developed under the Excalibur S program, featuring a simpler guidance section but retaining precision. * Excalibur V: A planned variant with a semi-active laser seeker for engaging moving targets, though its development status is uncertain. * M1156 Precision Guidance Kit: While a separate program, this PGK is often discussed alongside it as a lower-cost, less precise alternative for converting standard 155 mm rounds.

Operators

* : Primary operator used by the United States Army and United States Marine Corps. * : Acquired for use with its M777A2 howitzers. * : Operates the round with its Army's M777 howitzers. * : Utilizes the projectile with its PzH 2000 self-propelled howitzers. * : Fields the round with its Archer Artillery System. * : Received deliveries as part of security assistance from the U.S. Department of Defense and other allies.

Category:155 mm artillery