Bullet pens come in many sizes and shapes. The three main categories are Cartridge Bullet Pens, Real Bullet Pens and Expended Shell Casing Pens as shown below.
CARTRIDGE BULLET PENS
Cartridge Bullet Pen with Blue Corian Top - Click image for Cartridge Bullet Pens.
REAL BULLET PENS
Real Bullet Pen with Buffalo Horn Top - Click image for Real Bullet Pens.
EXPENDED SHELL CASING PENS
Expended 50 Caliber Shell Casing Pen with Strawberry Red Acrylic Tip - Click image for Expended Shell Casing Pens.