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Brownells 75th Anniversary - A Shooting Heritage

Even Sheet Metal Can t Stand Up to This Ammo

Underwood Ammo’s 9mm Luger +P+ 90 grain Xtreme Defense ammunition was designed with radial flutes that force the hydraulic energy inward to build pressure, packing a wallop in every round.

Underwood Ammo Xtreme Defense ammunition is tough on your target but boasts reduced recoil making it easy to shoot.

  • 20 rounds per box
  • Muzzle velocity: 1550 fps
  • CNC machined from solid copper
  • Permanent wound cavity 2x larger than the competition

When you need to stop your target cold, Underwood Xtreme Defense ammunition makes it happen.

You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition. All ammunition must be shipped Domestic Ground. Shipping not available for International residents. Residents in CA, DC, IL, MA, NY, CT, and NJ may have additional restrictions. Always make sure you use the correct ammunition for your firearms. Check your state and local laws for any other applicable firearms and ammunition regulations. Due to Department of Transportation regulations, we cannot accept returns on ammo. Please check local laws before ordering. View full restrictions here.

Ammunition pricing is per box.

ATTENTION – California Customers
Brownells is still shipping ammunition orders to California but the process has changed to comply with California Proposition 63. We must now ship ammunition purchased online to an FFL or California-approved ammunition dealer. After placing your order, a Brownells representative will contact you to ensure your ammunition arrives quickly and in compliance with the law.


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