M109A3GN – WalkAround

M109A3GN
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M109A3 Walk Around
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M109 A3 GE A2 Walk Around
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The **M109A3GN** (German-Norwegian) is a significantly modernized and localized variant of the American **M109** 155mm self-propelled howitzer family. This tracked, armored artillery piece was the primary indirect fire support weapon for the Norwegian Army for several decades.

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Design and Upgrades

The A3GN is based on the M109A3 platform, which was derived from early M109 models, but incorporates national Norwegian and inherited German modifications (“GN”). The key upgrade focused on dramatically increasing the howitzer’s firing range:

• **Main Gun:** The original short barrel was replaced with a much longer **155 mm L/39** caliber cannon. This extension is the most defining feature and provides superior ballistics.
• **Enhanced Range:** The L/39 barrel allows the system to achieve a maximum range of approximately **24 km** using standard high-explosive rounds, which can be extended to up to **30 km** using rocket-assisted or base-bleed ammunition.
• **Breech Mechanism:** It features a breech mechanism inherited from the German M109G variant (a wedge-type breech), differing from the screw-type breech of standard US models.
• **Ammunition & Rate of Fire:** The vehicle carries ammunition for the main gun, with a maximum rate of fire of around 4 rounds per minute.

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Operational Characteristics

Feature	Detail
**Type**	Tracked Self-Propelled Howitzer
**Origin**	USA (Base Platform), Norway (Upgrades)
**Main Armament**	155 mm L/39 Cannon
**Maximum Range**	approx 24 km (Standard) to approx 30 km (Base-Bleed)
**Crew**	6 (Commander, Driver, Gunner, 3 Loaders)
**Engine**	Detroit Diesel 8 V-71T Diesel Engine
**Armor**	Welded Aluminum (Protection against small arms and shell fragments)
**Secondary Armament**	12.7 mm M2HB Heavy Machine Gun

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Role and History

The M109A3GN served as a highly reliable and survivable artillery piece for Norwegian forces, meeting the demands of high-mobility warfare in various climates. Although it has largely been replaced in Norwegian service by modern systems like the K9 Thunder, several units have been recently transferred to other nations for continued use on the battlefield, showcasing the system’s enduring utility and the success of its modernization program.

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