Surveying the dynamics of improved AKMS rifles mentioning the viscosity of water

Abstract

After improving AKM-S riflesto being able to fire in two environments, the
bolt carrier’s travel distance and the gas port’sdiameter were also increased
due to the moving details are prevented by the resistance of water.
Therefore, calculating the dynamics of the gun is very important and
necessary. With the added viscous damper function, the paper has calculated
the dynamics of the rifles, and compared the displacement chart of the bolt
carrier before and after the improvement to affirm the reliability of these
rifles. The calculation results have affirmed the correctness of improving the
AKMS rifles to be able to fire in two environments.