M107
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M107 refers to:
- Messier 107, a globular cluster and a messier object in the Ophiuchus constellation
- The M107, a 155 mm projectile used by the United States Army.
- The M107 Caliber .50 Sniper Rifle (CFSR) is a semiatuomatic, 28-pound .50 caliber rifle manufactured by Barrett Firearms Manufacturing, and used by the US Army and other military.