M107 was a long-range 175 mm self-propelled artillery system used by the U.S. and allied forces.
M107 was a U.S.-origin 175 mm self-propelled gun designed for long-range artillery fire. Weaponsystems.net identifies it as a self-propelled gun, while Military Factory covers the M107 as self-propelled artillery. The current SPH category is close, but technically the M107 is a self-propelled gun rather than a howitzer.
The M107 used a long 175 mm gun on a tracked chassis related to the M110 heavy howitzer family.
The M107 prioritized range over shell weight. Its long 175 mm gun could reach deep targets, while the tracked chassis gave mobility and rapid displacement compared with towed heavy guns. The crew operated in an exposed open mount, which improved access but reduced protection.
M107 matters because it provided long-range conventional artillery before rocket artillery and precision missiles became dominant.
The system was valuable for counter-battery fire and deep interdiction, especially in Vietnam and Cold War planning. Its limitations included barrel wear, exposed crew, heavy logistics, and eventual replacement or conversion as 203 mm M110-type systems became preferred for heavy artillery roles.
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