This is +P ammunition. Do not fire it in a handgun or carbine that isn’t designed to accommodate above-standard chamber pressure.
Underwood advises against firing this ammo in a SIG P365 with an aftermarket barrel.
This round’s bullet is unusually light – a mere 68 grains, which is less than half as much as the heaviest conventional 9mm bullet. That makes sense, because the Xtreme Defender is made entirely out of copper – a metal far less dense than lead.
Its extremely light weight and stronger-than-usual propellant charge account for the bullet’s lightning-fast 1,800 fps muzzle velocity, as well as its close range striking energy that can easily outclass a .40 S&W. But the Xtreme Defender’s not just a heavy hitter. It penetrates deeply courtesy of its high kinetic energy and tough solid copper construction, and it produces a gaping wound cavity despite not increasing in diameter itself (a feat it owes to its fluted nose, which blasts pressurized soft tissues outward in four opposing directions).
Underwood’s premium pistol ammo is always loaded with flash-suppressed powder, as well as nickel-plated brass cases which cycle efficiently and resist corrosion. This ammo would also make a fine hunting companion, especially if you’re obliged to hunt with lead-free bullets!
20 Round Box
Features and Specifications:
Manufacturer Number: 864
Caliber: 9mm Luger +P
Bullet Weight: 68 Grains
Bullet Type: Lehigh Defense Xtreme Defender
Muzzle Velocity: 1800 fps
Muzzle Energy: 489 ft/lbs
Reloadable Nickel-Plated Brass Case
20 Rounds
Underwood advises against firing this ammo in a SIG P365 with an aftermarket barrel.
This round’s bullet is unusually light – a mere 68 grains, which is less than half as much as the heaviest conventional 9mm bullet. That makes sense, because the Xtreme Defender is made entirely out of copper – a metal far less dense than lead.
Its extremely light weight and stronger-than-usual propellant charge account for the bullet’s lightning-fast 1,800 fps muzzle velocity, as well as its close range striking energy that can easily outclass a .40 S&W. But the Xtreme Defender’s not just a heavy hitter. It penetrates deeply courtesy of its high kinetic energy and tough solid copper construction, and it produces a gaping wound cavity despite not increasing in diameter itself (a feat it owes to its fluted nose, which blasts pressurized soft tissues outward in four opposing directions).
Underwood’s premium pistol ammo is always loaded with flash-suppressed powder, as well as nickel-plated brass cases which cycle efficiently and resist corrosion. This ammo would also make a fine hunting companion, especially if you’re obliged to hunt with lead-free bullets!
20 Round Box
Features and Specifications:
Manufacturer Number: 864
Caliber: 9mm Luger +P
Bullet Weight: 68 Grains
Bullet Type: Lehigh Defense Xtreme Defender
Muzzle Velocity: 1800 fps
Muzzle Energy: 489 ft/lbs
Reloadable Nickel-Plated Brass Case
20 Rounds
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