As has been said many times, hand-held firearms are currently at an impasse, and the options offered by the designers are either too expensive or not adapted to be embodied in a full-fledged reliable sample. As a result, at the moment, the designers are crumpled in place, continuing to develop ideas that have already been worked out. The directions for improving performance are very diverse. Some strive to make their weapons more accurate, others lighter, others, like others, chase other characteristics, in general, everyone is doing everything to make the weapon more effective and reliable, sometimes forgetting about common sense. But there are those who find simple, and most importantly cheap solutions that can significantly increase the effectiveness of weapons, although the belief that such solutions will be useful on the battlefield, personally, I have great doubts. Nevertheless, let's try to get acquainted with one of the simplest solutions, which, despite its obviousness, began to be mass-produced quite recently, although the idea itself was found long ago.
As you know, the most unpleasant phenomenon when firing is recoil, which has a particularly noticeable effect on the effectiveness of automatic fire. Everyone is struggling with it in different ways. One of the most fashionable solutions at the moment is a system with balanced automation, but, alas, the price for a perfectly working sample is too high, and a cheap option cannot provide a long service life. The proposed solution not only provides a lesser effect of recoil on the accuracy of fire, but also allows you to use the weapon using only one hand, however, it becomes busy with the weapon and is actually useless, since it will be very difficult to get rid of the weapon.
But let's not beat around the bush, the solution was to replace the stock in the shortened versions of the AR-15, and, accordingly, in the M-16, as well as in other weapon models built on the basis of these samples. Instead of the standard butt, a slightly different element is installed, consisting of two plastic plates, between which the shooter's forearm must pass. Since the whole thing is being fixed, the weapon actually becomes an extension of the hand, accordingly, it is now possible to shoot from one outstretched hand, without using the other, and the recoil will go into the shooter's hand. The barrel toss when firing is actually excluded, however, for this you still need to make an effort, however, for the civilian market, that is, for single shooting, an almost full-fledged rifle can be used as a pistol.
The idea of such a splicing of a shooter with a weapon is, of course, interesting, but personally it reminds me of the inventions of foreign directors, something like a machine gun instead of a stripper's prosthetic leg (I don't remember in what next delirium I saw such a decision). Whatever one may say, but such an addition is far from being as good as it might seem. On the one hand, it becomes possible to fire using only one hand, on the other hand, a person actually loses this very hand, so this is more a device for fun than for real combat use. Even if one of the fighter's hands has suffered, then it is unlikely that he, as one of the heroes, will be able to tie the butt to the forearm in order to continue the fight, because in reality you also need to reload the weapon, and the pain significantly reduces the desire to fight, although with someone like, it depends on the person.
In general, the solution to the problem of damping recoil, or rather, its correct distribution, is simple, interesting, but useless, it seems to me.