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

WW2 Armor - Now hear this! With multiple types of

50 cal 700gr Armour Piercing saboted round with exposed Tungsten

30-06 M2 AP Armor Piercing Penetration Tests - Pew Pew Tactical

In focus: the 50 cal heavy machine gun in Royal Navy service

50 BMG - M2 Browning WWII Headstamps - Snap Caps

WWII Bullet Pen – History Salvaged

Would a .50 Cal Sniper bullet penetrate a tank's armor (e.g. an

Armour-piercing ammunition - Wikipedia

What happens when a .50 caliber bullet hits a person? - Quora

Original German WWII PAK 36 Armor Piercing 3.7cm Shell - 37mm Anti

How do armor-piercing bullets work? - Quora

US ARMY WW2 50 Cal Armor Piercing Relic Militaria

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

30-06 M2 AP Armor Piercing Penetration Tests - Pew Pew Tactical

Original U.S. WWII .50 Caliber M2 Machine Gun Inert Ammunition