请找出这两幅图中13处不一样的地方!步枪的发展经过了火绳枪、燧发枪、前装枪、后装枪、线膛枪等几个阶段以后,改进成半自动和全自动枪、步枪最早的记载是中国南宋时期出现的竹管突火枪,这是世界上最早的管形射击火器。15世纪初,欧洲开始 Please find 13 different places in these two figures! After the development of the rifle, several improvements have been made to the semi-automatic and fully automatic guns, including the arquebus guns, flintlock guns, front loading guns, rear loading guns, The earliest records of rifles were the bamboo tube shotgun appeared during the Southern Song Dynasty in China, which was the earliest tube firearm in the world. The beginning of the 15th century, Europe began