Underwood 9mm Luger 68gr Xtreme Defender

Underwood Xtreme Defender: Purpose-Built Self-Defense Ammunition

The Xtreme Defender represents a significant advancement in handgun ammunition design, engineered specifically for those who demand reliable performance when it matters most. This is ammunition built on proven principles, refined through extensive testing and real-world application.

Design and Construction

Monolithic Solid Copper Bullet

• Constructed from a single piece of copper, eliminating jacket-core separation
• Optimized nose flute geometry for controlled expansion and penetration
• Maintains integrity when passing through common barriers

Ballistic Performance

• Velocity: 1700 feet per second
• Muzzle Energy: 436 foot-pounds
• Penetration: Achieves up to 18 inches of consistent depth
• Permanent Wound Cavity: Over 100% larger than conventional expanding hollow points

Practical Advantages

Barrier Performance Unlike traditional hollow points that fail when encountering obstacles, the Xtreme Defender maintains its wound channel characteristics even after passing through wallboard, sheet metal, automotive glass, and similar barriers. This makes it a genuinely reliable choice for real-world defensive scenarios.

Case Quality

• Nickel-plated brass construction
• Improved feeding reliability across all firearm actions
• Superior corrosion resistance compared to traditional brass
• Resists tarnishing during storage
• Boxer-primed and fully reloadable

Specifications

• Caliber: 9mm Luger
• Bullet Weight: 68 grains
• Bullet Diameter: 0.355 inches
• Lead-Free: Yes
• Supersonic: Yes
• Suppressor Safe: Yes
• Rounds per Box: 20
• New Production: Non-corrosive

This ammunition represents the thoughtful application of modern materials science to the fundamental problem of reliable self-defense. It is ammunition for those who understand that performance under stress is what truly matters.