CZ 455 bolt disassembly tool
thingiverse
I built a fast tool that simplifies the process of breaking down and rebuilding the bolt of a CZ 455. While I haven't tested it with a 452 or 457, it's likely to work just as well. The native CAD design in SolidWorks is included, so feel free to make any necessary adjustments. It doesn't make sense that Thingiverse still requires STL submissions - using 3MF instead will result in higher resolution and faster slicing times.
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