SELF-LOADING GRENADE LAUNCHER Russian patent published in 2010 - IPC F41A1/00 F41A3/78 

FIELD: weapons and ammunition.

SUBSTANCE: self-loading grenade launcher consists of barrel, hammer, free bolt and lockwork. Free bolt with hammer and barrel are articulated by toothed links and synchroniser representing two gear wheels with their diametres ratio approximating to 1:2. Barrel muzzle is furnished with membrane extending beyond barrel lateral walls. Two symmetric side openings are made nearby barrel muzzle. Ledge is arranged at the bolt rear to engage with sear at the blow back rear point. Sear accommodates external thumb pieces and sear return spring to return sear after external thumb pieces are pressed down. Bolt and barrel have ledges arranged so that to allow their concussion at the rear point of launcher moving mechanism blow back.

EFFECT: lower recoil impulse, ease of use.

2 dwg