I like your assembly of the bullet(s) pen.
I would probably buff up the shells a bit but that's just me.
I like the turning of the wood on the wood pens. I also noticed on your wood pens that the wood is a bit proud of the hardware. An old timer gave me a tip for 'hiding' that. Take and round over those edges a bit with some abrasive and the transition will be less noticeable if any at all. It doesnt take a whole lot to make the corner disappear and in the end makes it look like is was made that way on purpose.
All in all they look good.