OP< original poster, do you understand that an AK is a rifle, not a pistol? So you normally would not carry it in any sort of device worn on your person. Sometimes they are slung, over the shoulder, muzzle pointed up or down, or slung from what is called the "assault sling", which is a leather or nylon strap, maybe 1 meter in length, which pretty much holds the weapon horizonally, perhaps across your front, by means of being slung over your shoulder, but some such slings hold it more towards your side. they are a bit like a sling that the doctor puts on your arm, if you have broken that arm and can't use it as you normally would.
Normally, if you carry a rifle or a shotgun, you don't do much else with your hands, unless you sling the rifle, and then about all you can do is carry a backpack. This is why pistols were developed, actually, to free up your hands so you can do other work than just be a soldier, and still give you some "(close range, 20m meters and less) way to protect yourself. Remember, the pistol really came into its own back when swords were the main weapon, so having a short ranged gun, capable of hitting a man only to 5 meters and less, still let you have quite an advantage over the man who had only a weapon that he had to thrust or swing with his arm. Understand?
today, with modern fighting pistols, while wearing ear protection, in good light and taking his time, a good man can stand up and use both hands on the pistol, and reliably hit a man sized target from 100m distance. He can sit down, brace his wrists between his knees, brace his back on a tree or building or car, and reliably hit that man at maybe as much as 150meters, too. With huge, specialized hunting pistols, which are not feasible for defense against men, some guys can hit that man torso to as much as 300m, but such pistols are 1/2meter long, weigh 2 kilos, cost $1000 US, fire very expensive types of ammo, have telescopic-glass sights mounted on them, and they are single shots. So they are totally unsuited to use as fighting weapons.