OVERVIEW:  The SA-6b GAINFUL mod 1 (2K12 KUB; 9M336) is a mobile, two-stage, solid fuel rocket and ramjet powered, low-to-medium altitude, surface-to-air missile  using command guidance with terminal semi-active radar homing (SARH).  It is equipped with a 57 kg warhead.

DETAILS:  The SA-6 GAINFUL was designed to supplement the larger and longer ranging 2K11 Krug / SA-4 Ganef with  low altitude coverage air defense, and was primarily intended to protect front line-armor and mechanized divisions.  The SA-6b features enhanced capability against jamming.


Specifications:
 
Weight: 		630 kg 
Length: 		5.80 m (with booster)
Diameter: 		0.335 m (missile), 0.65 (booster)
Wingspan: 		1.245 m (booster)
Speed:			600 m/s
Range:			3.2-11.9 nm (6-22 km)
Engagement Altitude:	65-26,250 ft (100-7000 m)   
Reload time:		10 minutes (approx.)
Max target speed: 	1166 knts (2,159 km/h)
Kill probability:	0.7 (single missile v. fighter-type aircraft)
Maneuverability:	15g	


NOTES:  IOC:  1976. Reported to be able to defeat an 8g target.

SOURCES: "9M9." Guide to Military Equipment and Civil Aviation. Accessed December 10, 2016. http://www.deagel.com/Surface-to-Air-Missiles/9M9_a000831001.aspx ; "Legacy Air Defence System Vehicles." Accessed December 10, 2016. "2K12 Kub/Kvadrat Self Propelled Air Defence System / SA-6 Gainful" Air Power Australia. Accessed January 21, 2017. http://www.ausairpower.net/APA-2K12-Kvadrat.html.; IHS. "2K12 Kub." Land Warfare Platforms: Artillery & Air Defence, 01 April 2016; http://www.ausairpower.net/APA-2K12-Kvadrat.html ; US Army.; OPFOR WORLDWIDE EQUIPMENT GUIDE, Vol 2: Airspace and Air Defense Systems. TRADOC DCSINT Threat Support Directorate, December 2011, pg. 6-71 ; Vestnik-pvo; "Self-propelled air devense missile system 2K12 'Cube'". Accessed December 10, 2016. http://pvo.guns.ru/russia/index33.htm; Jane's Land Warfare Platforms: Artillery & Air Defense, "2K12 Kub"; "2K12 M2 KUB - NATO Code: SA-6 GAINFUL | Ministry of Defence & Armed Forces of the Czech Republic." Ministerstvo Obrany a Armáda Ceské Republiky. Accessed December 12, 2018. http://www.army.cz/scripts/detail.php?id=6318.
