Just before the introduction of new-style guns during the end of Edo period, considering foreign situations, even the guns of percussion lock mechanism were imitated and experimentally produced, but there were many guns which, we do not know how to comment about, that could not possibly be in any practical use.
幕末新式銃渡来直前に海外事情も考慮してパーカッション式の銃器すら模造、試作されたものの他には、実用の可能性を想定していたものかどうかは何とも評しようがないものが多い。