Fin deployable Projectile with Wrist mounted 40mm Grenade launcher

Wrist mounted 40mm Grenade launcher

Howitzer style 30mm Cannon (HE part 2/2)

25mm Revolver - Hand Cannon

3Dprinted 20mm APFSDS

Hand tools, All in Gun

APFSDS of Soviet design and little bit of 3D printing

Fin deployed shell (XM1147 / AMP)

3Dprinted 20mm Mechanical APCR (feat BR-350P)

Can make a 30mm HE shell? (HE part 1/2)

Revolver Crossbow (Rapid-fire?)

Turning Water into an Impact Grenade

Smoothbore Weapons Solutions

3Dprinted 20mm APDS (and APFSDS)

BroadHead APFSDS

Upgrading HHO Impact Grenade

See through Suppressor for Potato gun

Is it Shrapnel Shell?

Chain mail vs. APFSDS with polearm, spear, and arrowhead shapes.

3BM9 APFSDS vs L15A5 APDS | 1960's APFSDS vs APDS Simulation | Armour Piercing Developments Vol. 4