Underwood Ammo Xtreme Defender is a high-velocity 9mm Luger cartridge built around a monolithic copper solid projectile for consistent penetration and retained mass. The load is intended for defensive, duty, and field applications where a lead-free copper projectile is preferred. Each retail box contains the indicated number of loaded cartridges for standard short-action handguns.
Packaging: Box — sold per box containing 20 cartridges. Case — a case is achieved by ordering the required number of boxes; this product is listed with 10 boxes per case (200 rounds per case).
Key Specifications
- The caliber is 9mm Luger.
- The bullet type is Copper Solid (monolithic).
- The muzzle velocity is 1700 fps.
- The bullet diameter is 0.355 inches.
- The cartridge case material is nickel-plated brass.
- Each box contains 20 cartridges.
- There are 10 boxes per case (case quantity achieved by ordering boxes).
- This cartridge is specified as reloadable.
- The product is described as lead-free for the projectile.
- The listed muzzle energy is 436 ft·lbs.
Underwood’s Xtreme Defender presents a no-nonsense, high-velocity 9mm option for shooters seeking a monolithic copper projectile in a factory load. With nickel-plated brass cases, reloadable components, and packaging set up for both single-box purchase and bulk case ordering, this ammunition is offered for users who prioritize consistent, lead-free performance from a purpose-built defensive/duty cartridge.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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