"Fires a 25mm cartridge packed with penetrating Flechettes that effectively transform the launcher into a semiautomatic shotgun."
— Battlelog description
The 25mm Dart is Flechette ammunition, similar to 12 Gauge Flechette, packaged for the XM25. When the 25mm Dart is used, the XM25 behaves more like a semi-automatic shotgun loaded with dart ammunition, unlike the 25mm Airburst Grenade which explodes. The IRNV Scope included with the XM25 provides another advantage over other shotguns that must unlock the scope through progression.