Sim-X 9mm Defensecore 45gr Lead Free Hollow Point 20Rnd Handgun Ammo

The Sim-X 9mm Defensecore is a next-generation self-defense round engineered for concealed carry, everyday defense, and professional training. Unlike traditional lead-core ammunition, Defensecore uses advanced SubMass™ technology with a proprietary Synthetic Composite and Kinetic-Ceramic Core, delivering unprecedented velocity and energy while remaining lightweight, low-recoil, and 100% lead-free.

Key Features

• Hyper-Velocity Performance: 45-grain hollow point reaching 2250+ fps and generating 505 ft-lbs of muzzle energy, nearly doubling the speed of standard 9mm rounds.
• Advanced Core Technology: The Kinetic-Ceramic Core, 10x stronger than lead, maintains integrity through barriers but is engineered to expand and transfer energy in soft targets, reducing the risk of over-penetration.
• Lightweight Advantage: Up to 80–90% lighter than lead-core ammo, reducing overall carry weight. A loaded magazine with Sim-X weighs significantly less, easing fatigue for concealed carriers and duty use.
• Reduced Recoil, Faster Follow-Ups: Proprietary jacket and SubMass™ design minimize recoil, allowing for quicker, more accurate consecutive shots without +P pressures or firearm modifications.
• Environmentally Safe: 100% non-toxic construction eliminates lead exposure, lowering range cleanup costs and supporting healthier training environments for law enforcement, military, and civilian shooters.

Why Choose Defensecore?

• Everyday Carriers: Lighter ammunition and reduced recoil mean easier all-day carry and greater control when it matters most.
• Home & Self-Defense: Balanced penetration and expansion are designed for civilian defense, helping reduce risks of over-penetration in close-quarters situations.
• Professional Training: Lead-free design makes it cost-effective and safe for high-volume range use without sacrificing performance.

Specifications

• Caliber: 9mm
• Bullet Weight: 45 grains
• Velocity: 2250+ fps
• Energy: 505 ft-lbs

• Lead-Free Hollow Point

• 20 Rounds per Box

​​Frequently Asked Questions: Sim-X 9mm Defensecore

What is SUBMASS™ Technology?

SUBMASS™ is a patented technology from SIM-X that enables lead-free, ultra-lightweight ammunition to function reliably in standard, unmodified firearms. The 9mm Defensecore bullet weighs 45 grains, which is nearly three times lighter than the standard 124-grain bullet for 9mm personal defense ammunition. This technology also allows for customized ballistic outcomes with significant control over penetration.

What does "Hyper Velocity" mean?

SIM-X ammunition is advertised as producing "Rifle Velocities in a Handgun," meaning it is roughly twice as fast as comparable lead-based ammunition. The 9mm Defensecore has a muzzle velocity of over 2250 feet per second (fps), compared to an average of 1100 fps for standard 9mm defense rounds.

How much is the recoil reduced?

The use of SUBMASS™ projectiles results in significantly lighter recoil. On average, the 9mm Defensecore produces 40% less recoil than standard 124-grain lead-core personal defense ammunition. This reduction in recoil leads to better firearm management, less shooter fatigue, and the potential for faster, more accurate follow-up shots.

Is the ammunition lead-free?

Yes, the patented bullet technology is 100% lead-free. The projectile consists of a standard copper alloy jacket with a non-toxic synthetic polymer core. The casing, powder, and primers are all industry-standard components.

How does the bullet expand? (What is SMART BULLET™ TECHNOLOGY?)

SIM-X utilizes what it calls SMART BULLET™ TECHNOLOGY for controlled penetration. Unlike conventional hollow points that can get clogged by clothing and fail to expand, the Defensecore bullet is designed to expand from the base to the nose. This allows it to penetrate materials like clothing and still achieve consistent expansion and energy transfer within the target.

What is the intended use for this ammunition?

The Sim-X Defensecore 9mm is designed primarily for everyday carry and personal defense scenarios where its high velocity and terminal performance are most critical. While designed for defense, its performance characteristics may also be suitable for practice or competitive shooting.

Is this ammunition compatible with all 9mm handguns?

The ammunition is engineered to cycle smoothly and effectively in a wide range of 9mm handgun platforms without requiring any firearm modifications or the use of higher-pressure +P cartridges. However, it is always recommended to check your specific firearm's specifications for compatibility.

Can this be used on steel targets?

Due to its extremely high velocity (2250 fps), this ammunition may not be suitable for use on certain pistol-rated steel targets. It is best to confirm the rating of any steel targets before using this type of ammunition.