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The STK 40 GL, formerly the CIS 40 GL is a 40 mm grenade launcher, developed in the late 1980s and produced by the Singaporean defense firm CIS - Chartered Industries of Singapore (currently ST Kinetics). The launcher is employed primarily by the Singapore Armed Forces and the police and security forces of several other countries.
Design
According to ST Kinetics Senior Engineer Felix Tsai, the STK 40 GL can be configured to be used with a buttstock or attached underneath assault rifles like the SAR-21, the M16 and HK series.
Using the Wayback machine on this CIS 40 GL page indicates that the CIS 40 AGL name was used until 2016, when it changed to the STK 40 AGL name as seen here.
References
Woźniak, Ryszard. Encyklopedia najnowszej broni palnej - tom 2 G-Ł. Bellona. 2001. pp60.
Capie, David (2004). Under the Gun: The Small Arms Challenge in the Pacific. Wellington: Victoria University Press. p. 65. ISBN978-0864734532.
"Archived copy" (PDF). www.smallarmssurvey.org. Archived from the original (PDF) on 11 December 2019. Retrieved 12 January 2022.{{cite web}}: CS1 maint: archived copy as title (link)
Czech Republic: 601st Special Forces Group uses it on Samopal vz. 58s.
Italy: Made under license by Luigi Franchi S.p.A. as the Franchi GLF-40.
Papua New Guinea: Used by the Royal Papua New Guinea Constabulary.
Poland
Peru: Used during Cenepa war 1995.