This is currently going on Kickstarter. These are very nice - I have a prototype. It takes both Schmidt pen and mechanical pencil refills. As full disclosure I am involved with the team who came up with this pen. https://www.kickstarter.com/projects/tuo/titanium-bolt-pen-ball-pen-and-mechanical-pencil-and-card-ruler?ref=project_build
It seems nice.. Good to see someone offering the Schmidt lead pencil unit as a swap in. The bolt travel must be very short for that mechanism... I wonder how far in the ballpoint refill retracts.... probably similar to pens that take the Schmidt clicker mechanism. One thing I always like about custom bolt mechanism is they seem to retract the pen refill far into the pen.
