The Underwood Ammo Xtreme Defender 9mm features innovative 90 grain solid monolithic projectiles designed for maximum terminal performance with 1400 FPS muzzle velocity and 392 ft-lbs of energy.Underwood Ammo Xtreme Defender 9mm ammunition90 grain solid monolithic projectile designHigh-performance 1400 FPS muzzle velocity392 ft-lbs muzzle energy for reliable stopping powerPremium nickel-plated brass casing20 rounds per box packagingEngineered for personal defense applications this premium ammunition delivers consistent performance and reliability when it matters most combining advanced projectile technology with Underwood's reputation for quality manufacturing.