4.2" M30 Mortar

4.2-Inch M30 Heavy Mortar History and Equipment

Learn about the U.S. 4.2-inch, or 107mm, M30 heavy mortar. Known as the “Four-Deuce,” this rifled, muzzle-loaded weapon succeeded the M2 and provided long-range indirect-fire support during the Cold War, including the Vietnam War. The M30 could be operated from a ground mount or installed in an M106-series mortar carrier.

This category is intended for live-fire M30 mortar systems, components, ammunition, and support equipment. The products currently displayed are shared mortar-training accessories rather than confirmed M30-specific parts or ammunition. Review each listing for stated caliber compatibility, included components, condition, and applicable transfer requirements.