Underwood Ammo Xtreme Defense Platinum 9mm Luger +P+ 90gr Solid Monolithic – 20 Rounds

Engineered for maximum terminal performance, the Underwood Ammo Xtreme Defense Platinum in 9mm Luger +P+ delivers one of the most advanced self-defense projectiles on the market today. The 90-grain solid monolithic bullet features an optimized nose flute design that produces a permanent wound cavity (PWC) reported to be over 100% larger in diameter and volume than traditional expanding hollow points — without relying on expansion to achieve it.

Unlike conventional hollow point ammunition, the Xtreme Defense maintains consistent terminal performance through common barriers including wallboard, sheet metal, and automotive glass. The solid copper construction ensures the wound channel remains unaffected regardless of intermediate obstacles, making this an excellent choice for serious personal protection scenarios.

Penetration depth reaches up to 18 inches, meeting and exceeding FBI ballistic protocol standards for self-defense ammunition. Each round is loaded in nickel-plated brass casings, offering superior corrosion resistance over standard brass, enhanced feeding reliability across all firearm actions, improved cosmetics, and easier case identification during reloading. Nickel plating also prevents tarnishing during long-term storage and resists degradation when in contact with leather, moisture, and other metals — ideal for daily carry ammunition.

Each box contains 20 rounds of premium +P+ self-defense ammunition. Whether you carry daily, compete, or are building out your home defense setup, Underwood’s Xtreme Defense Platinum represents a serious upgrade in stopping power and reliability.

Order online at Deep Roots Rifle Co for fast shipping nationwide, or stop by our gun store in Eustis, Florida to speak with our knowledgeable staff about the best self-defense ammunition for your firearm and needs.