• 4.2 Inch M3 HE Mortar Round, inert 3D-printed replica by Redleg3D
  • 4.2 Inch M3 HE Mortar Round replica, view 2
  • 4.2 Inch M3 HE Mortar Round replica, view 3
  • 4.2 Inch M3 HE Mortar Round replica, view 4
  • 4.2 Inch M3 HE Mortar Round replica, view 5
  • 4.2 Inch M3 HE Mortar Round replica, view 6
  • 4.2 Inch M3 HE Mortar Round replica, view 7
1 7

4.2 Inch M3 HE Mortar Round (TNT) - Hand-Painted 3D Printed Inert Replica

4.2 Inch M3 HE Mortar Round (TNT) - Hand-Painted 3D Printed Inert Replica

🎨 HAND-PAINTED · FULL COLOR · DISPLAY-READY

UNPAINTED · RAW PRINT · FINISH IT YOURSELF

Used with: M1 and M2 4.2-inch chemical mortars

$115.00 USD
$115.00 USD
Sale Sold out
Shipping calculated at checkout.

HAND-PAINTED · FULL COLOR · DISPLAY-READY

Every finished piece is primed, then hand-painted in full color and stenciled to its original markings: body color, bands, fuze, and lettering. It arrives ready to display, not as a raw gray or single-color print.

Why paint matters: Most 3D-printed replicas are sold as raw PLA plastic. Unprotected PLA softens and can warp in heat (a sunny window, a hot car, or a garage in summer), and sunlight slowly makes it brittle and faded. Our primer and paint seal the surface and shield it from UV, so your piece keeps its shape, color and detail for years.

UNPAINTED · RAW PRINT

This option ships as a raw, unpainted print for you to finish yourself. Raw PLA can soften and warp in heat and turns brittle in sunlight, so give it a coat of primer and paint before you display it.

Want it display-ready? Choose the painted option: we prime it, hand-paint it in full color and stencil it to its original markings.

Full-size 3D printed replica of the 4.2 inch M3 HE mortar shell (TNT filled), fired from the 4.2 inch chemical mortar in World War II and Korea. Hand-painted olive drab with the yellow M3 / TNT / 4.2IN-CM / W-SUPPL CHG / LOT markings, with the perforated ignition cartridge container at the base. Researched and built to be accurate in shape and markings for the period.

  • Display replica / prop - 100% inert plastic, nothing functional.
  • Hand-painted in full color - raw PLA warps and goes brittle over time; paint protects it.

Ships in 5-20 business days. See our shipping and returns policies.

View full details
  • 5 stars: 1 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous

Just received the 4.2 M3 mortar shell today, very happy with it! The quality of the print of the shell body, fuze, and cartridge container is absolutely perfect. Everything fits just right. Also the quality and color of the paints are just right. The stenciling was also very well done, and just as I wanted it. Awesome tribute piece to honor my dads service in korea. Will look great with his military items. Thank you Steve!