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Underwood Ammo has revolutionized the ammo industry with their .380 ACP Xtreme Penetrator ammunition. By combining their expertise with Lehigh Defense, they have packed more punch in one round than the other guys will have in the entire box.

Underwood Ammo’s Xtreme Penetrator ammunition features a solid copper bullet that has a unique nose which increases the hydraulic velocity, creating high pressure spikes which result in a greatly increased permanent wound cavity.


Blunt nose for initial energy transfer

Straight, deep penetration for reliable magazine feeding

Safe for the environment, deadly for your target

20 rounds per box


Underwood Ammo’s Xtreme Penetrator ammunition has a solid copper construction with cutting edges to punch through entry barriers without deformation or deflection, guaranteeing you a solid round for the range or for home defense.