Underwood Ammo 876Underwood Ammo 876 Xtreme Defense Platinum 9mmLuger+P 90gr Solid Monolithic 20 Per Box/10 Case
$26.98
Underwood Ammo's 876 Xtreme Defense Platinum is a solid monolithic 9mm Luger +P round purpose-built for self-defense and close-quarters stopping power. Loaded with a 90-grain copper monolithic bullet, this ammunition delivers 1475 feet per second muzzle velocity and 435 foot-pounds of energy—figures that matter when reliability counts. The lead-free construction makes it a cleaner-shooting option for indoor ranges and training, while the nickel-plated brass cases are reloadable for cost-conscious shooters who plan to reload.
The Xtreme Defense Platinum runs supersonic and is rated safe for suppressor use, a practical feature if you're running a dedicated home-defense or training setup. The solid copper construction eliminates fragmentation concerns and delivers consistent penetration—key factors in any defensive scenario. With a sectional density of 0.102 and a ballistic coefficient (G1) of 0.087, this round is engineered to maintain stable flight and overcome resistance reliably.
Each box contains 20 loaded rounds, boxer-primed for reloading, and the non-corrosive formula means you can shoot and reload without worrying about case degradation. Whether you're zeroing a new carry gun, building confidence at the range, or stocking reliable defensive ammunition, Underwood's solid monolithic design and velocity envelope give you a round that performs consistently in 9mm +P platforms.
Key Features
- Solid copper monolithic bullet construction for consistent expansion and penetration
- 90-grain projectile at 1475 fps—fast enough to guarantee supersonic performance
- Lead-free design; cleaner burning and ideal for indoor ranges
- Suppressor-safe
- Nickel-plated reloadable brass cases
- Boxer-primed for handloader flexibility
- Non-corrosive propellant
Specifications
| Caliber | 9mm Luger +P |
| Bullet Weight | 90 grains |
| Bullet Type | Solid monolithic copper |
| Bullet Diameter | 0.355" |
| Muzzle Velocity | 1475 fps |
| Muzzle Energy | 435 ft-lbs |
| Sectional Density | 0.102 |
| Ballistic Coefficient (G1) | 0.087 |
| Case Type | Nickel-plated brass (reloadable) |
| Primer | Boxer |
| Rounds Per Box | 20 |
| Lead-Free | Yes |
| Suppressor-Safe | Yes |
Frequently Asked Questions
Is this ammunition safe to use in a suppressed 9mm?
Yes. Underwood rates the 876 Xtreme Defense Platinum as suppressor-safe, so you can run it through a can without concern.
Can I reload these cases?
Yes. The rounds come in nickel-plated brass cases with boxer primers, making them fully reloadable for handloaders looking to reduce ammunition costs over time.
What's the advantage of solid copper monolithic bullets?
Monolithic construction eliminates jacket separation and fragmentation, delivering deeper, more predictable penetration—a critical feature in defensive ammunition. The lead-free design is also cleaner to shoot, especially indoors.
How many rounds are in a box?
Each box contains 20 loaded rounds. Underwood also sells this ammunition in a 10-box case for higher-volume shooters or training programs.
