Russia
GP-25
The GP-25 “Kostyor” is a 40mm caseless under-barrel grenade launcher for AK-pattern rifles — fielded in 1978 and a fixture of Russian infantry squads from Afghanistan to Ukraine.
China's semi-automatic precision grenade launcher, fielded in 35mm for the PLA and 40mm for export — delivering airburst rounds through a window at 600 m.
The GP-25 “Kostyor” is a 40mm caseless under-barrel grenade launcher for AK-pattern rifles — fielded in 1978 and a fixture of Russian infantry squads from Afghanistan to Ukraine.
The standard U.S. belt-fed 40 mm automatic grenade launcher — a crew-served, blowback weapon that delivers high-velocity grenade fire against personnel and light armor out to 2,200 m, and has served in every major U.S. deployment since the Gulf War.
The M320 is a single-shot 40×46mm low-velocity grenade launcher that mounts under a service rifle or operates as a standalone weapon with a collapsible stock, adopted by the U.S. Army in 2009 to replace the M203.