THE AKS-74U IS A FULL AUTO CARBINE CHAMBERED IN 5.45X39. IT HAS A FOLDING STOCK AND A SHORT BARREL FOR CONCEALABILITY AND TO REDUCE WEIGHT. IT WAS DESIGNED FOR PARATROOPERS, BUT THEY ENDED UP USING THE AKS-74, A LONGER VERSION OF THIS GUN.THE AKS-74U IS STILL USED BY POLICE FORCES IN THIRD-WORLD COUNTRIES AND CRIMINALS WHO NEED A CONCEALABLE, LIGHT GUN WITH GOOD STOPPING POWER. YES I'M A GUN NERD LOL