Underwood 9mm Ammo
Updated · 21 products · 14 in stock · prices refreshed daily
(0)
9mm - +P+ 90 Grain Xtreme Defender - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
From:
$21.95
17
(0)
Underwood Ammo 9 mm Luger +P+, 124 Grain, JHP, Nickel Plated Brass Cased, Centerfire Pistol Ammo, 20 Pack, A113U-113
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
From:
$18.05
16
(4)
9mm - 90 Grain Xtreme Defender - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Xtreme Defense
Caliber:
9×19mm Parabellum
Capacity:
20
Finish Per Color:
Nickel Plated Brass
Grains:
90 grain
From:
$23.38
16
(0)
Underwood Ammo Xtreme Penetrator, 9x19mm Parabellum, 65 Grain, Solid Monolithic, Nickel Plated Brass Case, Centerfire Pistol Ammo, 20 Rounds Box, 863
Brand:
Underwood Ammo
Bullet Type:
Soft Point
Caliber:
9×19mm Parabellum
Capacity:
20
Finish Per Color:
Nickel Plated Brass
Rounds:
20
From:
$23.45
15
(1)
9mm - +P 90 Grain Xtreme Defender - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Xtreme Defense
Caliber:
9×19mm Parabellum
Capacity:
20
Finish Per Color:
Nickel Plated Brass
Grains:
90 grain
From:
$23.38
16
(1)
9mm - +P 147 Grain JHP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
From:
$18.87
15
(0)
9mm - +P 124 Grain JHP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
From:
$18.10
15
(0)
Underwood Ammo Hunting, 9mm +P, 147 Grain, Hard Cast Lead Flat Nose, Nickel Plated Brass Case, Centerfire Pistol Ammo, 20 Rounds Box, 719
Brand:
Underwood Ammo
Bullet Type:
Flat Nose
Caliber:
9×19mm Parabellum
Rounds:
20
From:
$20.95
14
(0)
Underwood Ammo 9mm Luger - 115gr.extreme Penetrator 20-pk
Brand:
Underwood Ammo
Bullet Type:
Soft Point
Caliber:
9×19mm Parabellum
Rounds:
20
From:
$28.78
13
(0)
9mm - +P 115 Grain JHP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
9mm - 115 Grain JHP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
UNDERWOOD 9MM LUGER +P+ 147GR - Nickel Plated Brass Casing
Brand:
Underwood Ammo
Bullet Type:
Full Metal Jacket
Caliber:
9×19mm Parabellum
Grains:
147 grain
Rounds:
20
(0)
UNDERWOOD 9MM LUGER +P 124GR FMJ 50RD 10BX/CS
Brand:
Underwood Ammo
Bullet Type:
Full Metal Jacket
Caliber:
9×19mm Parabellum
Grains:
124 grain
Rounds:
50
(0)
9mm - +P 115 Grain TAC-XP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
Underwood Ammo Maximum Expansion, 9x19mm Parabellum, 105 Grain, Solid Monolithic, Nickel Plated Brass Case, Centerfire Pistol Ammo, 20 Rounds Box, 154
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
Underwood Ammo 9Mm Luger Handgun Ammo - 124 Grain +P Bonded Jacketed Hollow Point 20Rd Box 137
Brand:
Underwood Ammo
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
Underwood Ammo 9 mm Luger +P+, 147 Grain, BJHP,Nickel Plated Brass Cased, Pistol Ammo, 20 Pack, A133-133
Brand:
Underwood Ammo
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
Underwood Ammo 9 mm Luger +P+, 115 Grain, JHP, Nickel Plated Brass Cased, Centerfire Pistol Ammo, 20 Pack, A112U-112
Brand:
Underwood Ammo
Bullet Type:
Full Metal Jacket
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
9mm - 70 Grain HERO Maximum Expansion - Underwood - 20 Rounds
Brand:
Underwood Ammo
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
9mm - 124 Grain JHP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
9×19mm Parabellum
Rounds:
20
(0)
9mm - 115 Grain TAC-XP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Caliber:
9×19mm Parabellum
Rounds:
20
Marketplace Insights
★ 4.2/5
based on 6 customer reviews across 21 products from 19 retailers
Highly-rated self-defense ammunition praised for superior performance and quality control, though one reviewer flagged primer seating concerns and pricing is a consistent drawback.
What customers like
Superior stopping power67%
This will make your average 9mm firearm even more capable
Consistent quality & reliability50%
The quality control is top notch on both
100% weight retention33%
Bullets made by Lehigh Defense and retain 100% of their weight
Common concerns
Primer seating inconsistency17%
not all primer seating was the same. Caution advised
Premium pricing17%
Expensive.. but great.
Frequently Asked Questions
Underwood 9mm Ammo
Is Underwood 9mm good?
Underwood 9mm is well-regarded for self-defense use. Their loads deliver strong velocity, reliable expansion, and consistent penetration. Pricing runs roughly $18–$44 per box. Most shooters report good accuracy and dependable performance across their lineup.
What is better, 124 grain or 147 grain 9mm?
Neither is objectively better—it depends on your priorities. 124 grain offers moderate recoil and expands more on impact. 147 grain is subsonic, penetrates deeper, and typically produces softer felt recoil. For self-defense, that expansion vs. penetration tradeoff matters most. Test both in your firearm to confirm reliable cycling.
Is underwood ammo made in the USA?
Yes, Underwood Ammo is made in the USA. The company is based in Sparta, Illinois and has manufactured ammunition domestically since its founding in 2013, specializing in self-defense and hunting loads.
What is underwood ammo known for?
Underwood Ammo is known for high-velocity self-defense and hunting ammunition. Their Extreme Defender and Xtreme Penetrator lines are popular choices. They offer calibers including 9mm, 10mm, .380, and .450 Bushmaster at competitive prices, typically around $25 per box.
Is Underwood Xtreme Defender good?
Xtreme Defender rounds are well-regarded for self-defense. They use light monolithic copper bullets at high velocities, designed for deep penetration rather than expansion. Note that some sources flag excessive penetration as a concern for general defensive use. Expect to pay around $25 per box. Test them in your firearm before carrying.
What is the difference between Underwood Xtreme Defender 68 grain and 90 grain?
The 68 grain travels faster (around 1,716 fps vs 1,468 fps from a 5-inch barrel), producing a wider wound channel with less recoil. The 90 grain delivers more energy and deeper penetration but more felt recoil. Both stay under 18 inches penetration, making them suitable for self-defense.
What is 147 grain 9 mm good for?
147 grain 9mm is primarily used for self-defense and law enforcement. The heavier bullet offers deeper penetration, subsonic performance (making it ideal for suppressed firearms), and meets FBI ballistic standards. It produces less felt recoil than lighter loads, which can improve follow-up shot accuracy.
What is 124 grain 9mm good for?
124 grain 9mm is well-suited for self-defense and general range use. It offers better penetration and retained energy than lighter 115 grain loads while remaining controllable. Many shooters choose it as their standard carry ammunition, and it feeds reliably in most 9mm pistols.
