The M29 is an American-produced 81 millimeter mortar. It began replacing the M1 mortar in U.S. service in 1952 being lighter and with greater range. It was subsequently replaced by the M252 mortar in 1987. Variants included the M29E1 and M29A1, adopted in 1964. These were produced with a hard chrome-plated bore to prolong barrel life and ease of cleaning. The maximum rate of fire of the M29 is 27 rounds per minute, while the sustained rate of fire is 4 rounds per minute; For the M29A1 model, the maximum rate of fire is 30 rounds per minute with a sustained rate of fire of 5 rounds per minute. The range varies depending on the type of ammunition used: HE M374A2 (High Explosive): Minimum range 72 m, maximum range 4595 m. HE M362A1 (High Explosive): Minimum range 46 m, maximum range 3987 m. HE M43A1B1 (High Explosive): Minimum range 69 m, maximum range 3890 m. WP M375A2 (White Phosphorus): Minimum range 72 m, maximum range 4737 m. WP M370 (White Phosphorus): Minimum range 52 m, maximum range 3987 m. M301A3 (Illumination): Minimum range 100 m, maximum range 3150 m. M301A2 (Illumination): Minimum range 100 m, maximum range 2150 m. The weapon was usually serviced by a crew of five.

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