Their first attempt was to shorten the AK-47 rifle, but this proved to be almost uncontrollable at the automatic fire. A barrel that is longer will slow down the bullet through friction but is essential for gun control. The shorter barrel is for good close-range combat. If it was chambered with more powerful rounds, it would over-penetrate. The AKS-74U is a carbine (a mix between rifle and SMG). The AKS-74U fires a little 5.45mm cartridge, which makes the bullet easier to fire and gun control better. Those types of guns can quickly spray bullets in close combat which makes them especially useful. It could be felt like a Personal Defense Weapon (PDW). However, it uses the Small Caliber, High Velocity (SCHV) concept first put to a trial by fire by the M16 in Southeast Asia (not just in Vietnam – the British also used them in Borneo). The AK-74U is a straightforward Kalashnikov rifle. 6 Technical specification: AKS-74U submachine gun Introduction
