WWII Era 50 cal pen with armor piercing bullet

Some of you will recall my write up on a modified way to make 50 cal pens using 3D printed inserts and ball bullets

Armor piercing shell hi-res stock photography and images - Alamy

High Caliber Craftsman - We The People 50 cal Bullet Pen - Made in USA

Wwii 50 Cal

50 Cal Bullet Pen Kit — WoodWorld of Texas

M1 Garand + Vintage WW2 Armor-Piercing Ammo vs HARD DRIVES

50 Caliber Bullet Pen EHC00842 Cal Casing Fired Pin Gift Fire Hunt

Congress Proposes Gun Control Legislation Broadening Meaning of

WWII 50 Caliber Headstamps

Fisher Space Pen Bullet Pen - 400 Series - Chrome w

50 caliber bullet hi-res stock photography and images - Alamy

BIG SHOT .50 CALIPER BULLET PEN: - Silver Creek Press

Armor Piercing Caliber .30 M 2

How do armor-piercing bullets work? - Quora