Tactile Turn Bolt Action Pen in bronze, Short 5.1" (10-BA2-BRO-TTM). Official listing is a copper-tin alloy with bronze tip, body, top, and internal, a titanium bolt, and a stainless steel deep-carry clip. Official specs: 0.43" diameter, 5.1" long, 1.9 oz, Schmidt EasyFlow 9000 refill. Official page lists a warm golden tone and a patina that develops with use. Machined in Dallas, TX. Specs from the tactileturn.com Bronze Bolt Action Pen page.
Bronze Short. Parker-style refill. This is the 5.1" length.