M777

M777 (Light Towed Howitzer) – 1001 in Army, ANG and Marine Corps

Manufacturer: BAE Systems' Global Combat Systems

In service: 2005-present

Number built: 1098

Specifications

Caliber: 155 mm

Weight: 3,420 kg

Length:

Combat – 10.7 m

Travel – 9.5 m

Barrel length: 5.08 m

Crew: 7+1

Shell: M107, M795, ERFB, M982

Carriage: split trail

Elevation: 0° to +71.7°

Rate of fire:

Normal – 2 rpm

Maximum – 5 rpm

Effective firing range:

M107 – 24 km

ERFB – 30km base bleed

Excalibur – 40km

CEP (Circular Error Probability): 2 m (M982 Excalibur round)

M777 – gun with optical fire control

M777A1 – digitisation upgrades with the addition of an on-board power source, satellite global positioning, inertial navigation, radio, Gun Display Unit (GDU) and Section Chief Assembly (SCA)

M777A2 – Block 1A software upgrade. Addition of an Enhanced Portable Inductive Artillery Fuze Setter (EPIAFS) to enable Excalibur and precision munition compatibility

The M777, combined with the Excalibur GPS-guided munition, almost doubles the area covered by a single battery to about 5,000 km².