The Underwood Ammo Xtreme Defender 9mm +P+ delivers exceptional performance with 90 grain solid monolithic projectiles achieving 1550 FPS muzzle velocity and 480 ft-lbs of muzzle energy.Underwood Ammo Xtreme Defender 9mm +P+ ammunition90 grain solid monolithic projectile designHigh-velocity loading: 1550 FPS muzzle velocityPowerful energy transfer: 480 ft-lbs muzzle energyPremium nickel-plated brass casings20 rounds per box packagingEngineered for maximum terminal performance and reliability this premium defensive ammunition is ideal for personal protection applications where consistent expansion and penetration are critical.