TB12 is a mission-specific shotgun ballistic breaching round used to defeat a variety of urban structures to include exterior and interior doors. TB12 provides a dramatic reduction in collateral damage to non-combatants as well as operators through the use of a frangible material that delivers maximum energy to the breach point yet turns to a near harmless powder upon impact. TB12 is a cost-effective training and operational breaching round allowing operators to ''train as they fight.'' The frangible property of TB12 delivers near-threat lethality in addition to being a superb breaching round, ensuring that the breacher remains operational regardless of the weapon system being used.