The B-11 recoilless rifle (It is also known as RG107) is a Soviet

Soviet Union

The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

 107 mm smoothbore

Smoothbore

A smoothbore weapon is one which has a barrel without rifling. Smoothbores range from handheld firearms to powerful tank guns and large artillery mortars.-History of firearms and rifling:...

 recoilless rifle

Recoilless rifle

A recoilless rifle or recoilless gun is a lightweight weapon that fires a heavier projectile than would be practical to fire from a recoiling weapon of comparable size. Technically, only devices that use a rifled barrel are recoilless rifles. Smoothbore variants are recoilless guns...

. It entered service in 1954, and was typically towed by a 6x6 ZIL-157

ZIL-157

The ZIL-157 is a general purpose 2.5 ton 6x6 truck, produced in post-WW2 Soviet Russia.The ZIL-157 was the standard Soviet truck until it was replaced by the ZIL-131 and Ural-375D series whose became the standard Soviet army trucks alongside with GAZ-66. The People's Liberation Army also produced...

 truck or a UAZ

UAZ

UAZ , Ulyanovsky Avtomobilny Zavod is an automobile manufacturer based in Ulyanovsk, Russia which manufactures off-road vehicles, buses and trucks. It is best known for its Model 469 jeep, which has seen wide use as a military vehicle in Russia and around the world...

 4x4 truck.

Designed by KBM

KBM

Order of Lenin and Order of Labour Red Banner FSUE "KB Mashinostroyeniya or KBM for short is a state defense enterprise, scientific and design R&D center specialized in missile systems located in Kolomna, Moscow region, Russia....

, Kolomna

Kolomna

Kolomna is an ancient city and the administrative center of Kolomensky District of Moscow Oblast, Russia, situated at the confluence of the Moskva and Oka Rivers, southeast of Moscow. The area of the city is about . The city was founded in 1177...

.

It is fitted using a PBO-4 sight which has a 5.5x zoom direct fire sight and a 2.5x zoom sight for indirect fire.

Specifications

• Crew: 5
• Calibre: 107 mm (4.21 in)
• Weight: 304.8 kg (672 lbs)
• Length: 3.56 m (11.67 ft) (travel position).
• Barrel length: 3.383 m (11 ft)
• Height: 1.19 m (3.90 ft) (firing position). 0.9 m (3 ft) (travel).
• Traverse: 35 degrees in each direction
• Elevation: -10/+45
• Rate of fire: 6 rounds per minute

Ammunition

• BK-883 - HEAT.
  Projectile 7.51 kg (16.5 lbs).
  Complete round 12.5 kg (27.5 lbs).
  Warhead 1.06 kg (2.3 lbs) of RDX
  RDX
  RDX, an initialism for Research Department Explosive, is an explosive nitroamine widely used in military and industrial applications. It was developed as an explosive which was more powerful than TNT, and it saw wide use in WWII. RDX is also known as cyclonite, hexogen , and T4...
  
  /Aluminium.
  GK-2 PIBD fuze.
  Range: 450 m (494 yds) (effective) 1,400 m (1,531 yds) (max).
  Penetration 381 mm (15 in).
  Muzzle velocity
• O-883A - FRAG-HE.
  Projectile 8.5 kg (19 lbs).
  Complete round 13.5 kg (30 lbs).
  Warhead 2.088 kg (4.6 lbs) Amatol 80/20.
  GK-2 PIBD fuze.
  Muzzle velocity: 375 m/s (1,230 fp/s).
  Range: 1,300 m (1,421 yds) (direct) 6,650 m (7,272 yds) (indirect)

Users

The weapon was used by Bulgaria

Bulgaria

Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

, Cambodia

Cambodia

Cambodia , officially known as the Kingdom of Cambodia, is a country located in the southern portion of the Indochina Peninsula in Southeast Asia...

, China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, East Germany, Egypt

Egypt

Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

, North Korea

North Korea

The Democratic People’s Republic of Korea , , is a country in East Asia, occupying the northern half of the Korean Peninsula. Its capital and largest city is Pyongyang. The Korean Demilitarized Zone serves as the buffer zone between North Korea and South Korea...

, North Vietnam

North Vietnam

The Democratic Republic of Vietnam , was a communist state that ruled the northern half of Vietnam from 1954 until 1976 following the Geneva Conference and laid claim to all of Vietnam from 1945 to 1954 during the First Indochina War, during which they controlled pockets of territory throughout...

 and Poland

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

.

External links

• http://www.bratishka.ru/archiv/2004/7/2004_7_8.php