The M109 is an American 155 mm turreted self-propelled howitzer, first introduced in the early 1960s to replace the M44 and M52. It has been upgraded a number of times, most recently to the M109A7. The M109 family is the most common Western indirect-fire support weapon of maneuver brigades of armored and mechanized infantry divisions.

Oct 9, 2024 · M109A4: Similar to the A2/A3 but with enhancements for Nuclear, Biological, and Chemical (NBC) protection. It featured improved engine reliability, better filtration systems, and a manual override for the hydraulic clutch.

Jul 1, 2006 · The M109A4 is a M109A2/A3 with modifications which include the addition of Nuclear, Biological, and Chemical/ Reliability, Availability, and Maintainability (NBC/RAM) product improvement kits.

Fitted with a short (23-caliber) 105mm M126 howitzer with muzzle brake and a distinctive large "lazy D"-shaped fume extractor. Maximum M126 projectile range of 15,914 yd (14,600 m). The vehicle carried 28 rounds. The M109A1 mounts the longer M185 155mm gun and incorporates elevation, traversing and suspension improvements.

The IDF took delivery of M109A2′s & A3′s around 1970 and were designated the Rochev (Rider) and were used in the Yom Kipper War of 1973. The Rochev’s were upgraded (except some were kept in the reserve units) by the IDF from 1993 and designated the Doher.

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 …

The M109 A2, M109 A3, M109 A4, and M109 A5 Howitzers are self-propelled artillery pieces designed for direct and indirect fire support. These howitzers are capable of firing a variety of projectiles, including high-explosive, smoke, and illumination rounds.

The M109A4 is a M109A2/A3 improvements include the addition of Nuclear, Biological, and Chemical/ Reliability, Availability, and Maintainability (NBC/RAM) product improvement kits.

Jul 7, 2011 · The M109A4 is a M109A2/A3 improvements include the addition of Nuclear, Biological, and Chemical/ Reliability, Availability, and Maintainability (NBC/RAM) product improvement kits. The driver and...

M109 is a 155mm self-propelled howitzer developed in the 1950s as a replacement for the US Army's M44. It features full tracked chassis, one M185 or M284 155mm cannon as primary armament and a roof-mounted M2 .50 caliber machine gun as secondary armament.