Perfect Compensators and More for AK 47

The explanation of the phenomena connected with the functioning of AK 47 presupposes a series of knowledge in physics and chemistry. The application of these principles allows building a theoretical model of the studied phenomenon and synthesizing it through mathematical formulas. The models are then used for essentially practical purposes, for example, to simplify production or improve performance, the work of analysis is not a sterile exercise. Still, it is a fertile field for subsequent practical applications. However, in the specialized magazines, the work of the “model maker” hardly comes to light. For obvious market reasons, the maximum emphasis is generally given to the average reader’s most appealing topics, referring to unique columns’ most indigestible cases.

The Right Examination

This being the case, let’s examine the compensators’ functioning, with one eye on the physical reality of the phenomenon and with the other on the practical applications of the device. The rear sight mount ak-47 belongs to a large family of accessories (such as the silencer, the muzzle brake, the flame suppressor, the recoil enhancer, the gas recuperator, etc.), which exploit for various purposes the outflow of the burnt gases through the muzzle of the weapon after ejection of the projectile, directing or regulating the gaseous jet appropriately

So How It Works?

This exerts, on the wall that contains it, a thrust oriented in the opposite direction to the motion of the current, responsible for the fluid dynamic effects is the energy content of the gases themselves, which still have relatively high temperature and pressure values. In the case of the compensator, the jet of the burnt gases is suitably diverted in such a way as to compensate for the weapon surge due to the recoil. Due to the latter, the weapon retracts and rotates around the center of gravity since it begins to recoil while the bullet is still in the compensator part. All this causes many times, upon passing the muzzle, a deviation of the bullet itself from the original direction. But back to recoil, for short guns, the wheelie is upwards, while for some long firearms, it can be downwards. In revolvers, in semiautomatics in general, in all those weapons in which the forces due to the pressure of the gases are discharged directly through the closing organs, on the barrel or the castle, the lift is now due to the recoil motion of the slide.

How the Experts Work On It

The experts solved the recoil problem on some war weapons, creating a particularly simple compensator: slicing the barrel-like salami at the muzzle. In this way, the gases vent upwards while the projectile is still guided by the barrel until approximately half of the elliptical section’s development is thus obtained. This solution has the advantage of simplicity (and is therefore suitable for rustic and reliable weapons such as assault rifles). Still, it has the undesirable effect of a flashy muzzle flash (common, moreover, although to a lesser extent, also to other types of compensator).


To prevent this drawback, the more sophisticated types instead provide a series of successive expansion chambers, arranged following the muzzle and provided with suitably shaped windows for venting the gases, or a numerous series of holes arranged in a radial direction, which they also act as flame extinguishers by splitting the gas flow into a myriad of micro-jets. 


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