Underwood Ammo 9mm Luger +P+ 90 Grain Xtreme Defender Solid Monolithic Nickel Plated Brass Cased Pistol Ammo 20 Rounds. Specifications for Underwood Ammo 9mm Luger +P+ 90 Grain Xtreme Defender Solid Monolithic Nickel Plated Brass Cased Pistol Ammunition: Manufacturer: Underwood Ammo Caliber: 9mm Luger +P+ Number of Rounds: 20 Bullet Type: Monolithic Bullet Weight: 90 grain Cartridge Case Material: Nickel Plated Brass Muzzle Velocity: 1550 ft/s Muzzle Energy: 480 ft-lbs Application: Personal Defense Package Type: Box Primer Style: Centerfire Lead Free: Yes Package Contents: Underwood Ammo 9mm Luger +P+ 90 Grain Xtreme Defender Solid Monolithic Nickel Plated Brass Cased Pistol Ammo Underwood Ammo 817: 9mm Luger +P+ 90 Grain Xtreme Defender Solid Monolithic Nickel Plated Brass Cased Pistol Ammo 20 Rounds