Brownells 75th Anniversary - A Shooting Heritage

Increased Velocity, Deeper Penetration

Underwood Ammo’s 9mm Luger +P+ 115 grain Xtreme Penetrator ammunition features a solid copper round that has a unique nose that increases the hydraulic velocity upon impact, creating high pressure spikes inside the target, resulting in a greatly increased permanent wound column.

Because Underwood Ammo’s Xtreme Penetrator ammunition was designed with a solid copper bullet, it features strong cutting edges to punch through entry barriers without deformation or deflection, guaranteeing you a solid round for the range or for home defense.

  • Blunt nose for initial energy transfer
  • Straight and deep penetration while allowing for reliable magazine feeding
  • Unique nose that increases hydraulic velocity
  • Muzzle velocity: 1350 fps

Underwood Ammo has combined their trademark power and precision with Lehigh Defense to masterfully design their Xtreme Penetrator ammunition, bringing you a round with show-stopping performance each time.

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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