Tks! You are correct!
江南制造局 = Jiang Nan Machine - Manufactureing Bureau
快利 = Kuai Li (name of this rifle, means fast and sharp)
乙未 = 1895 in Chinese Year name
造 = Made
China Qing failed in First Chino-Japanses war (War of Jiawu) in 1895, result China lost TAIWAN and China Nationalist start their revolution plan.
nice to see someone get a piece of history that they cherish.