I ' ll have you know , only had the ak for about 3 weeks and already put its through its paces . Only shot about 150 rounds through it but one of them and the last one I shot was a . 223 Remington out of the AK . It chambered and it fired . what happened was , took some inexperienced friends to the range to shoot my ar and ak . Had a friend load a mag and a Remington round somehow slipped in there while he was loading it I know how could he not tell the difference anyways it chambers and fires , casing expands in my barrel gunpowder everywhere . She is at the gunsmith right now , seems like everything is fine but wanted a professional opinion . I am assuming everything is ok so just shows me how big of a beast these AKs are