The M30 106.7 mm (4.2 inch, or "Four-deuce") heavy mortar is an American rifled, muzzle-loading, high-angle-of-fire weapon used for long-range indirect fire support to infantry units. The M30 system weighs 305 kilograms (672 lb) including the complete mortar with a welded steel rotator, M24A1 base plate, and M53 sight.

A Marine M-98 107mm "Howtar, " a 4.2-inch heavy mortar mounted on a 75mm pack- howitzer chassis, awaits a fire mission in support of the Special Landing Force in Opera-

The howitzer (/ ˈhaʊ.ɪtsər /) is an artillery weapon that falls between a cannon (or field gun) and a mortar. It is capable of both low angle fire like a field gun and high angle fire like a mortar, given the distinction between low and high angle fire breaks at 45 degrees or 1600 mils (NATO).

A Marine helicopter from HMM-361 brings ammunition to a howtar position during Operation STARLITE. The howtar is a 107mm mortar tube mounted on a pack howitzer chassis, hence the name howtar.

2012年5月26日 · 作为M98 HOWTAR炮（HOWitzer和morTAR-榴弹炮和迫击炮）的基础，他们从75毫米M116榴弹炮（战后指定M1炮）上取下了很好的旧马车。 在上面几乎没有进行任何设计更改，就安装了107毫米M30迫击炮弹的枪管。

The M30 107 mm (4.2 inch Mortar) heavy mortar is an American rifled, muzzle-loading, high-angle-of-fire weapon used for long-range indirect fire support to infantry units. The M30 system weighs 305 kg including the complete mortar with a welded steel rotator, M24A1 base plate and …

2025年1月24日 · It was designated as XM70 MORITZER (MORtar & howITZER - mortar and howitzer). As is clear from the decoding of the name, the designers decided to combine a light howitzer and a solid-caliber mortar in one gun. A new carriage was developed especially for …

2011年10月19日 · In 1941, the U.S. Army requested a 105 mm howitzer suitable for carriage by air, and as a rough guideline, a weight of 2,500lb and a range of no less than 7,000 yards were stipulated. In response, the M2A1 howitzer was cut down in …

2015年6月23日 · 23 US Mortar Model M98 107mm. US 4.2 inch Mortar Model M98 107mm. Caliber - 106mm /4.2 inch Action - Recoil Muzzle Velocity - fps Range - 4,500 meters max / 515 meters minimum Rate of Fire - 5 rounds per minute for 20 minutes, 1 round per minute indefinitely Length - 12 feet 3 inches Weight Towed - 1,289lbs Entered Service - 1956. This weapon was also known as a "Howtar"

2022年2月14日 · Page details technical specifications, development, and operational history of the M30 (4.2-inch / Four-Deuce) 106.7mm Heavy Mortar System including pictures.