$38.99
30 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The Underwood Xtreme Defender is built on a proven design that prioritizes penetration and tissue damage over traditional hollow point expansion. At 135 grains and loaded to +P pressures, it leaves the barrel at 1335 fps with 537 foot-pounds of energy. The solid copper construction is monolithic, meaning there's no core-jacket separation, no lead, and 100% weight retention that stays with the round through barriers.
This isn't a hollow point. Instead of relying on a nose cavity that can clog with fabric or intermediate barriers, the Xtreme Defender uses precisely engineered radial flutes at the nose. As the bullet travels through soft tissue at high velocity, these flutes force fluid and tissue outward, creating a permanent wound cavity significantly larger than traditional defensive rounds. The design was developed to work even when the round passes through heavy clothing, drywall, glass, or auto sheet metal without losing effectiveness. Sharp cutting edges on the projectile also help defeat barriers while maintaining the integrity of the wound channel.
Nickel-plated brass cases resist corrosion better than standard brass and extract more reliably in any action. The cases are boxer-primed for straightforward reloading when you're ready to reload. New production, non-corrosive ammunition means it's safe for all modern firearms and won't leave residue that damages your gun. Flash-suppressed powder is standard across Underwood's lineup, so your vision stays sharp if low-light situations arise.
This is a +P load, meaning it operates at higher pressures than standard .45 ACP. The 135-grain bullet weight keeps recoil manageable compared to heavier +P loads, making follow-up shots faster and easier. That said, always verify your firearm is rated for +P ammunition before using. Most modern pistols are, but some older or specific models may not be.
The Xtreme Defender uses a solid copper projectile with engineered radial flutes instead of relying on hollow point expansion. This design creates massive wound cavities through fluid dynamics and works even when passing through barriers like clothing, drywall, or glass that would clog or deform traditional hollow points.
No. This is +P ammunition, which operates at higher pressures. Your firearm must be rated for +P loads. Check your owner's manual or contact the manufacturer to confirm compatibility. Using +P ammunition in firearms not designed for it can cause damage or unsafe conditions.
Yes. The nickel-plated brass cases are boxer-primed and reloadable. The nickel plating actually makes reloading easier because it resists tarnishing and the cases feed and extract more smoothly than standard brass.
Yes. The solid copper construction and lead-free composition make it suitable for use with suppressors. No special modifications or additional considerations are needed.
| Caliber/Gauge | .45 ACP |
|---|---|
| Case Material | Nickel-Plated Brass |
| Cost per Round | 1.95 |
| Grains | 135 gr |
| Length | 3.1500 |
| Manufacturer | |
| Manufacturer Part Number | 844 |
| Shipping Weight | 0.7 |
| Units per Box | 20 |
| UPC | 816874020187 |
You must be logged in to post a review.
Reviews
There are no reviews yet.