Underwood 40sw 100gr - Xtreme Defender 20rd 10bx/cs

The Underwood 40sw 100gr Xtreme Defender 20rd is a premium self-defense and duty ammunition solution engineered for law enforcement, armed professionals, and civilian defenders who demand reliable terminal performance. This round combines Lehigh Defense's proven Xtreme Defender bullet technology with Underwood's meticulous quality control, delivering consistent ballistic performance in the widely-adopted .40 S&W platform. Each case contains 10 boxes of 20 rounds, ensuring adequate supply for training cycles, qualification shoots, and carry rotation.

The 100-grain Xtreme Defender projectile operates on a unique solid copper construction that eliminates traditional fragmentation while achieving controlled expansion through fluting and advanced nose geometry. This design generates a muzzle velocity of 1500 feet per second, producing consistent energy transfer and barrier penetration that meets FBI testing protocols. The monolithic copper bullet design prevents jacket/core separation, ensuring deep, predictable wound channels through intermediate barriers—including clothing, drywall, and vehicle glass. The 40 S&W caliber's proven stopping effectiveness is maximized through this combination of bullet design and velocity optimization, making it suitable for both duty carry and personal defense scenarios.

Law enforcement agencies, military personnel, and civilian shooters benefit from this ammunition's consistent accuracy and reliable feeding across standard .40 S&W platforms, including Glock, Smith & Wesson M&P, SIG Sauer, and Beretta models. The compact 20-round box format accommodates standard magazine capacities without waste, while the 10-box case quantity supports range facilities, training academies, and professional shooters managing their annual ammunition budgets. Underwood's reputation for quality control ensures each round meets strict dimensional tolerances and primer specifications for reliable ignition in all weather conditions. This ammunition is best suited for duty carry, defensive training, and qualification exercises where performance consistency and terminal effectiveness are non-negotiable.