The M777 howitzer is a British towed 155 mm artillery piece in the howitzer class. It is used by the ground forces of Australia, Canada, Colombia, India, Saudi Arabia, Ukraine, and the United States. It was first used in combat during the War in Afghanistan. The M777 is manufactured by BAE Systems ' Global Combat Systems division.

The 155mm M777 Howitzer is the core strategic artillery system of the future, soon to become the NATO standard weapon in its class. The gun is already in high demand from nations worldwide, recognising the unique structure and capability of providing artillery support to early entry and rapid reaction forces.

2025年1月12日 · The M777A2 system makes extensive use of hydraulics to operate the breech, loading tray,, and suspension system to reduce crew size and fatigue. Additionally, the M777A2 provides significant time savings for displacement and emplacement.

2025年3月8日 · Following the war in Ukraine that started in February 2022, the United States has delivered several dozen of M777 howitzers to Ukraine's armed forces. According to information published on November 30, 2022, Ukraine has received from the United States 142 M777 155mm towed howitzers including the M777A2 variant with 4,200 M982 Excalibur ...

Initially developed for the U.S. Marine Corps and the U.S. Army as their next generation Medium Force weapon, the M777 has become the benchmark for 155mm Lightweight Towed Artillery Systems. Highly portable by land, sea and air, the system features a minimal logistical footprint alongside maximum reliability.

M777 是 牵引式155mm榴弹炮，一个炮兵班陆军8人，海军陆战队10人。 The M777 is a towed 155 mm howitzer with a gun crew of 8 soldiers or 10 marines. 这里不谈炮兵部队和 炮兵发射指挥中心 的运作，仅谈如何操作M777。 当炮兵部队收到作战任务后，炮兵部队就将M777拉到到指定的发射阵地。 There is a whole lot of battery and Battery Fire Direction Center (FDC) stuff that I will skip to focus on the operation of one M777.

The breech should not be opened for at least 2 minutes after the firing attempt. All personnel not required unloading should seek protective cover at least 50 meters from the weapon to avoid injury if weapon fires unexpectedly.

2022年4月26日 · When setup to fire, the M777 adopts a four-point stance for maximum support and to help content with the weapon's inherently violent recoil. The muzzle is capped by a large double-baffled muzzle brake for this purpose as well. Elevation and traverse are handled at the rear of the weapon near the breech as is loading and reloading.

2016年11月14日 · Being developed by BAE Systems, this will draw on technology from the US Navy's 155 mm Long Range Land Attack Projectile (LRLAP) and could have a maximum range of 100 km. Although normally crewed by a team of seven, the M777 can be operated by five. Rapid insertion and extraction are key factors in battlefield survivability.

Uniquely, it was the sole 'slow-cone' interrupted screw mechanism to enter service after 1920. This meant that two separate movements were necessary to open the breech, versus the single movement of the 'steep cone' mechanism that simultaneously rotated and withdrew the breech.