US Army M109A1 in 1982. Fielded in 1973, this modification replaced the M126 cannon with a 39 caliber M185, featuring a longer barrel while increasing maximum range to 18,100 meters. [13]

The M109A1 was introduced into American service in 1973 as an improved version of the M109 self-propelled howitzer. The main improvement was the installation of a new 155 mm M185 cannon, which had a longer barrel and a higher muzzle velocity than the previous M126.

The M109A1 is the iconic Cold War era self-propelled howitzer used by NATO forces. The M109A1 is the intermediate model of the M109 family. It is a successor to the short barrel Vietnam era M109 and predecessor to the more capable A5 and Paladin models.

Aug 13, 2021 · Accepted in November 1962 and entering service in Vietnam, where its 360-degree traverse made it a welcome asset at firebases, the air-transportable M109 mounted an M126 23-caliber 155 mm howitzer within an armored …

This is the Name for the Swiss 224 M109A1 fully upgraded ((lit. Kampfwertsteigerung = upgrade of combat capabilities). Ruag created a Swiss-designed L47 155 mm gun which had an increased firing range of up to 36 km.

The M109A1 variant features an improved gun—the M185 155 mm/L39 howitzer. This artillery system was introduced in 1970 and deliveries commenced in 1973. Other improvements include a...

Dec 29, 1999 · The M109A1 mounts the longer M185 155mm gun and incorporates elevation, traversing and suspension improvements. It can fire a high-explosive round 19,800 yd (18,100 m). The M109A1 weighs 53,070 lb (24,070 kg) fully loaded and is …

Aug 8, 2022 · In 1973, the M109A1 entered production, featuring a 39-caliber M189 cannon with a longer tube and more slender muzzle brake, which increased range from 15,967 to 19,794 yards. A succession of upgrades in armament and technology followed.

Jul 1, 2006 · The M109-series medium, self-propelled howitzer is a full-tracked, armored combat support, internally loaded, air transportable, vehicle powered by an eight cylinder, diesel engine. The system is capable of both direct (line of sight) and indirect (out of the line of sight) firing.

The M109A3 is a depot converted M109A1 incorporating the 27 mid-life improvements. The operational characteristics of the M109A3 are virtually identical to the M109A2. Some M109A3s have three contact arm assemblies: all M109A2 have five contact arm assemblies.