9MM Luger +P+ – Underwood Ammo 90 Grain Xtreme Defender Solid Monolithic (817) – 20 Round Box

UPC: 816874020149

Underwood Ammo 9mm Luger +P+ 90 Grain Xtreme Defender (817) ammunition is engineered for maximum defensive performance. Featuring a solid copper Xtreme Defender projectile by Lehigh Defense, this load utilizes a fluted design to create fluid displacement and deep penetration without relying on traditional hollow point expansion.

The +P+ pressure rating provides increased velocity and energy beyond standard and +P loads, enhancing terminal effectiveness. The 90 grain projectile offers a balance of speed and mass, while nickel-plated brass cases improve feeding reliability and corrosion resistance in demanding conditions.

Ballistic Data

• Caliber: 9mm Luger +P+
• Bullet Weight: 90 grains
• Bullet Type: Xtreme Defender Solid Monolithic (Fluted Solid Copper)
• Muzzle Velocity: Approximately 1,600 fps
• Muzzle Energy: Approximately 512 ft-lbs

Technical Specifications

• Manufacturer: Underwood Ammunition
• Bullet Manufacturer: Lehigh Defense
• Part Number: 817
• Case Type: Nickel-Plated Brass
• Primer: Boxer, non-corrosive
• Reloadable: Yes
• Rounds Per Box: 20
• UPC: 816874020149

Usage

• Personal defense
• Concealed carry (in +P/+P+ rated firearms only)
• Home defense

Performance Characteristics

• Fluted Solid Design: Creates wound channels through fluid displacement rather than expansion.
• +P+ High Velocity Load: Increased speed and energy for maximum effectiveness.
• Barrier Performance: Maintains effectiveness through common obstacles.
• Nickel-Plated Cases: Improve feeding reliability and corrosion resistance.
• Premium Components: Manufactured to Underwood’s high-performance standards.

Summary

Underwood 9mm Luger +P+ 90 Grain Xtreme Defender (817) delivers extremely high velocity, deep penetration, and innovative terminal performance in a 20-round box. Designed for defensive use, it offers reliable function and enhanced effectiveness when used in properly rated firearms.