5.56 Bolt
grabcad
A custom-made bolt based on an old Colt M4A1, boasting dimensions accurate to +/- 0.005. If requested, I can complete it or you may finish it yourself and share the result. The remaining tasks involve finishing the extractor channel and adding the extractor pivot pin hole. This versatile bolt is compatible with cartridges like 50 Beowulf, .223 Remington, 300 Blackout, and 6x45.
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