derdeveloped for so long. One major hurdle was rifling.Without a foundation of machine industry, relying solely on hand-crafting bullets would be impossible to guarantee production standards. Even if...in Kingdom"Guan Jia Aoqin frowned, cautiously saying: “The importance of looking at the intelligence... But the specifics, I can’t tell you.”Li Chen sneered, "Are you crazy"Li Chen was too lazy to was...