The XM -25 fires 25 mm grenades that are set to explode in mid-air at or near the target. A laser rangefinder in the weapon is used to determine the distance to the target. The user can manually adjust the detonating distance by up to 10 feet (3.0 m) shorter or longer; XM25 mechanically transmit the detonate distance to the grenade in the firing chamber. The grenade tracks the distance it has traveled by the number of spiral rotations after it is fired then detonate at the proper distance to produce an air burst effect. These features make the XM25 more effective than usual grenade launchers at the task of hitting targets that are behind cover or dug into the ground. One of the weapon's developers, Richard Audette, believes that the XM25 is a big leap forward because it is the first small arms weapon to use smart technology.
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