Underwood Ammo Xtreme Defender 9mm Luger +P+ 90gr Solid Copper Ammunition, 20-Round Box

The Underwood Ammo Xtreme Defender 9mm Luger +P+ 90gr Solid Copper (Underwood Ammo part no. 817) loads a 90-grain Solid Copper behind 9mm Luger +P+ chambering, built for personal defense and everyday carry. Underwood Ammo engineers this round around consistent, reliable expansion when a fight-stopping hit matters most. Unlike a hollow point, the Solid Copper does not rely on expansion at all: its fixed flutes force hydraulic energy inward as it drives straight through, creating a wound channel without the bullet needing to open up. For handgun ammunition, this is a carry-and-forget load for the nightstand, the holster, or the range bag.

Key Specifications

• The chambering is 9mm Luger +P+, a proven defensive chambering with wide handgun and ammunition availability.
• The bullet weighs 90 grains, light for caliber, which keeps velocity and hydraulic energy transfer high.
• The bullet design is Solid Copper, a solid copper, non-expanding projectile that relies on fixed flutes rather than petal expansion.
• The case material is Nickel-Plated Brass, the slicker nickel finish resists tarnish and feeds reliably from a carry gun.
• This is a +P+-rated load, so confirm the firearm is rated for +P+ pressure before shooting it.
• Each box holds 20 rounds, a practical case-lot size for stocking up without overcommitting.
• At about $1.30 per round in this box quantity, it is competitive with comparable factory loads in this caliber.
• The box ships at roughly 0.5 lb, light enough to make case-quantity orders easy to plan.

Frequently Asked Questions

What is the Underwood Ammo Xtreme Defender 9mm Luger +P+ 90gr Solid Copper best suited for? With 9mm Luger +P+ chambering and a 90-grain Solid Copper, it is built for personal defense and everyday carry.

Is this +P+ ammunition safe in any 9mm Luger handgun? Only in firearms rated by their manufacturer for +P+ pressure. Check the barrel or owner’s manual before shooting +P+ loads.

Is this a good choice for concealed carry? Yes, the 90-grain Solid Copper is built for reliable feeding in compact carry pistols and does its work through penetration rather than expansion.

Buy the Underwood Ammo Xtreme Defender 9mm Luger +P+ 90gr Solid Copper

Carrying every day means trusting the round in the chamber, and this is the load built to earn that trust. Load up, run it through your carry gun to confirm function, and keep it ready. Order from our Lubbock, Texas gun shop and it ships fast to your door.