![](https://s3images.coroflot.com/user_files/individual_files/224622_OkBsO4eWd1qxaelyTYgZmXCnz.jpg)
Bolt - A retractable pen inspired by an AR-15 bolt carrier.
![](https://s3images.coroflot.com/user_files/individual_files/224622_98M3xlUmagb7t6bYQ0e1Whmhb.jpg)
design process - With this project, I knew what I wanted from the start: a pen mimicking the bolt carrier of a modern rifle. After jotting down my concept, I quickly moved to CAD to work out the details. From there, I created production drawings then started machining.
![](https://s3images.coroflot.com/user_files/individual_files/224622_mNt78Fow5Lxb9CPJ_ttWdSy6k.jpg)
machining - I machined 7 of the custom parts of my pen from 316 stainless steel and the eighth from Delrin. a few fasteners were purchased from McMaster-Carr, and the cartridge is a Cross Selectip Gel Rolling Ball refill.
![](https://s3images.coroflot.com/user_files/individual_files/224622_jSuMSupxsMcNPYqXhieYd71_t.jpg)
exploded
![](https://s3images.coroflot.com/user_files/individual_files/224622_wPJLuQnWqXrOGIcBslmMczvlE.jpg)
machined
![](https://s3images.coroflot.com/user_files/individual_files/224622_gEiGLmmMVEhogT5h9sjNS6oC9.jpg)
Bolt Pen
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