SIM-X Defensecore 9mm, 45gr, JHP, 20rd Box

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DefenseCore from SIM-X is the first of its kind ammunition for every-day carry, combining hyper-velocity, performance recoil, and optimized on-target, in-target terminal performance when needed most. The patent pending synthetic-polymer core is perfectly married to the proprietary jacket, achieving outstanding performance in all handguns in the areas that matter most. DefenseCore helps put devastating rounds on target, in critical situations when it matters the most.

Higher Velocity SIM-X ammunition generates velocities twice that of traditional pistol rounds by increasing the efficiency of the propellant/projectile combination. This is done without increased recoil or additional pressures like those found in +P loads. This massive jump in velocity yields permanent wound cavities–something previously thought to be unattainable with pistol ammunition.

Penetration Control SIM-X SubMass projectile technology combined with our revolutionary use of non-toxic viscoplastic and kinetic-ceramic bullet core material, allows us to accomplish something impossible with traditional bullets–precise penetration control. Regardless of velocity, penetration can be consistently kept within the spec intended.

Reduced Recoil Shots on target and quicker target reacquisition are paramount for the safety and success of law enforcement and military operations. SIM-X SubMass technology provides a smooth, true low recoil action that accelerates the operator’s trigger action and cadence. This results in more shots on target in less time.

100% Biodegradable Lead Free Core = Environmentally Friendly! SIM-X patent pending synthetic and kinetic-ceramic core materials are 100% non-toxic. For LE and military trainers, this means that tens of thousands of dollars normally allocated to bullet trap cleaning and lead recovery/mitigation can be reallocated for higher priorities within their training budgets.
SIM-X Defensecore
Jacketed Hollow Point
20rd Box

Estimated shipping times are posted on the product information page under the title "Ships On Or Before:" please note that all lead-times are estimates.  For items in our warehouse, we usually ship within 3 business days.  For items only available at distribution or other sources, the ship time may be up to 10 business days.  For items only available at the manufacturer, the lead-time may be a few weeks or longer-- depending on availability.

Please also note that some items are unique, hard to obtain, or one-of-a-kind, so Impact reserves the right to cancel your order should an item not be available to ship.

We will not charge your credit card until your product ships, except for certain special orders.

We normally will ship FedEx and US POSTAL. If you need faster shipment, we can ship 2nd Day or Next Day for an extra charge.

Alaska and Hawaii residents - your order MUST ship 2nd day or faster. Most orders over $100 value will ship with a signature-required to ensure they make it to you. Products that have free shipping only applies to the lower 48 states.

NOTE: We make every effort to get your order shipped as fast as possible. In some circumstances, especially during sales and after weekends, we may not get your order shipped in the time specified. Please rest assured that we will ship your item as soon as we can.

We want you to be 100% satisfied with your purchase from Impact Guns, therefore we offer no hassle returns.

How do I start the return process?

  • Log in to your account and locate and click on the "Request Return" link.
  • An Impact Guns agent will review your request for a return and respond within two business days.
  • All returns are subject to inspection and approval prior to refund being issued.
  • All products need to be in new and original manufacturer condition.
  • As an alternate method, you can send an email to Please be sure to include your original order number and relevant contact information.

When will I get my credit or return?

  • Most returns are fully refunded in 3-5 days after we receive and process the return. It may take longer for the credit to appear in your account depending on your bank. Most items that are in stock ship within 3-5 days after receipt of your returned item but may take longer depending on availability.
  • Returns must be charged back to the original credit card used in the purchase.  If this is not possible, we will refund you via check.

What about damaged/incorrect items?

  • If you received a damaged, defective, or incorrect item, Impact Guns will ship you a replacement of the exact item upon receipt of the damaged or defective item. Impact Guns will send you a return shipping label for the return.

What about return shipping costs?

  • If an Impact Guns error causes the need to return an item or we are replacing a returned defective or incorrect item, then we will pay the associated shipping costs.
  • Otherwise, the customer is responsible for any return shipping costs. When returning an item, please add package tracking and adequate insurance.
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