40mm Dart

40mm Dart ammunition uses flechettes to penetrate cover and inflict damage, rather than fragmentation (as with the 40mm Grenade). This allows a grenade launcher (purpose-built or underslung) to function like a shotgun.

Battlefield 3
40mm Dart ammo is the first unlockable ammo type for the M320 grenade launcher, filling the role of BFBC2's 40mm Shotgun. It often inflicts fatal damage on infantry and flies truer than grenades, but is useless against armored vehicles.

Compared to Flechette Ammunition for 12-gauge shotguns, the 40mm variety inflicts much more damage but suffers from the launcher's one round capacity.