2K12 Kub

2K12 “Kub” NATO reporting name: SA-6 "Gainful"
2P25 TEL with missiles elevated (2K12 Kub SAM of Serbian 250th Air Defence Missile Brigade)
Type	Tracked medium-range surface-to-air missile system
Place of origin	Soviet Union
Service history
In service	1967–present
Used by	See list of operators
Wars	List Yom Kippur War Angolan Civil War Chadian Civil War Western Sahara War Iran–Iraq War 1982 Lebanon War Gulf War Yugoslav wars Kosovo War Syrian Civil War Russo-Ukrainian War Yemeni Civil War (2014–present) 2020 Nagorno-Karabakh war Russo-Ukrainian war
Production history
Designer	NIIP/Vympel MMZ (GM chassis)
Designed	1958–1967
Manufacturer	Ulyanovsk Mechanical Plant (SURNs) ZiK (TELs)
Produced	1968–1985[1]
No. built	500 launchers, 10,000 missiles[2][dubious – discuss]
Variants	2K12 Kub, 2K12E Kvadrat (export version), 2K12M3, 2K12M4
Specifications (2K12 Kub)
Main armament	3 3M9M4(or variants) guided missiles
Engine	integral rocket motor/ramjet booster and sustainer motor
Guidance system	command guidance with terminal semi-active radar homing (SARH)

The 2K12 "Kub" (Russian: 2К12 Куб; English: 'cube') (NATO reporting name: SA-6 "Gainful") mobile surface-to-air missile system is a Soviet low to medium-level air defence system designed to protect ground forces from air attack. 2К12 is the GRAU designation of the system.

Each 2K12 battery consists of a number of similar tracked vehicles, one of which carries the 1S91 (SURN vehicle, NATO designation "Straight Flush") 25 kW G/H band radar (with a range of 75 km (47 mi)) equipped with a continuous wave illuminator, in addition to an optical sight. The battery usually also includes four triple-missile transporter erector launchers (TELs), and four trucks, each carrying three spare missiles and a crane. The TEL is based on a GM-578 chassis, while the 1S91 radar vehicle is based on a GM-568 chassis, all developed and produced by MMZ.