|Drawing of a Kuai Qiang, probably with wrought iron barrel (highlighted), from 'Ji Xiao Xin Shu (《紀效新書》)'.|
Qi Ji Guang's Improvements
Ming general Qi Ji Guang (戚继光) was unimpressed by the poor performance of Kuai Qiang (and handgonne in general). However, he lacked the resource to replace handgonne with arquebus entirely, so he proposed several improvements to Kuai Qiang as stopgap measure. Specifically, he standardised the bore size of Kuai Qiang, and replaced the short and unwieldy cast iron barrel of the Kuai Qiang with a two chi long, wrought iron barrel that is much lighter. Despite the improvements, he still considered Kuai Qiang to be inferior to arquebus.