Operating Mechanisms & Function Cycle of MK 19 MOD 3 40 mm Grenade Launcher

Document Type : Original Article

Authors

Military Technical College, Egypt.

10.21608/iugrc.2021.246221

Abstract

The Mk 19 is a belt-fed, blowback-operated, air-cooled, crew-served, fully automatic weapon. The weapon operates on the blowback principle, which uses the chamber pressure from each fired round to load and re-cock the weapon.
This paper presents a study of the operating mechanisms and function cycle of 40 mm Grenade Launcher, which is very important weapon, used by the Egyptian army and has been manufactured recently in Egypt. Studying of this weapon helps in understanding its construction and design, finding out the causes of its malfunctions, improving the efficiency of its maintenance and repair, and making weapon development easier. All operating mechanisms have been simulated by using AUTODESK INVENTOR 2016 and the function cycle of the weapon is calculated based on real calculations and measurements of the needed parameters such as: impulse of powder gases, return spring stiffness, buffer stiffness and weights of moving parts. Finally the function cycle of 40 mm Grenade Launcher has been calculated according to the standard rate of fire as almost 400 round per minute.

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