I personally handmade this pen in my shop. The main body is REAL rattlesnake skin protected by a crystal clear resin.
The chrome metal components are designed like a bolt action rifle. To operate the pen, slide the "bolt" forward and lock the bolt into position - just like a real bolt action rifle.
The pocket clip is shaped like a rifle, the top looks like a primer and the writing tip end resembles a 30 caliber bullet cartridge.
I made this pen to use a standard PARKER compatible ballpoint refill - available at your local larger office supply store, or on line.
I have been personally handcrafting custom design pens since 2005. Experience matters.
Thank you for looking.