Optimized Type Zhongzheng Rifle

Modifications and optimizations have been made to some parts that are difficult to print or lack sufficient strength. For parts prone to print failure and easily damaged during installation, different pre-plated options and spare parts are provided. Preset settings have been changed to make support easier to remove, improve support surface quality, and reduce the amount of sanding and repair work. Different size options are provided for some accessories, allowing you to print them to find the appropriate small part size.