Barrel life depends mainly on the quality of steel and the burning condition of the firing charge
The Maoist's chrome and nickel production is large, widely used in firearms, and the effect is better, the Chinese lack of this, and the use of rare-earth alloys, the mechanical properties of which are inferior to those of the Maoist's in comparison
In addition, in the case of the firing charge, the corrosive nature of the domestic firing charge is slightly greater, and if it is not cleaned up in time, it will be more damaged. slightly larger, if not cleaned up in time, the damage is a little more