It depends on what you want to do. Long-range or other forms of precision shooting are going to require more precision in the manufacture of the firearm and am

It depends on what you want to do. Long-range or other forms of precision shooting are going to require more precision in the manufacture of the firearm and ammunition. An AK47, on the other hand, well the whole design is based around very loose tolerances for ease of manufacture and for reliability - not as affected by dirt, mud, sand, etc as other designs.