A Shen Wei Lie Huo Ye Cha Chong, from 'Wu Bei Zhi (《武備志》)'.

Shen Wei Lie Huo Ye Cha Chong (神威烈火夜叉銃, lit. 'Divine might raging fire Yaksha gun') is simply a Chinese handgonne loaded with specially designed incendiary barbed darts (also smeared with poison). As such, any handgonne can be instantly turned into a Shen Wei Lie Huo Ye Cha Chong by simply swapping its ammunition (Ming Chinese naming sense can be funny like that).