Which JDAM uses the BLU-109 and tail kit KMU-557?

The GBU-31 V3 is specifically designed to incorporate the BLU-109 warhead along with the KMU-557 tail kit. The BLU-109 is a hard-target penetrator, making it suitable for striking fortified structures and bunkers. The KMU-557 tail kit enhances the JDAM's guidance capabilities, providing precision strike functionality by converting the unguided bomb into a guided munition using GPS. This combination allows for effective penetration and reduced collateral damage when striking high-value targets.

The distinction of the GBU-31 V3 from other options lies in its specific warhead and tail kit integration, which is critical for particular mission objectives where penetration is necessary. Other variants of the GBU-31 or different JDAMs like the GBU-38 and GBU-52 utilize different warheads or configurations, which do not match this criteria. Therefore, understanding the attributes of the GBU-31 V3 clarifies why it correctly aligns with the use of the BLU-109 and KMU-557 kit.