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Heckler Koch Mark 23 .45 ACP Pistol 81000078 / M723001-A5

SKU 81000078-HK

Limited Production Handgun - 12 Round Magazine

List Price $2,729.00
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FFL Requirements
This item can only be shipped to a Licensed Federal Firearms Dealer. Please see our Shipping Policy to review firearms shipping requirements.
Export Restrictions
Government Export Restriction
This item may be regulated for export by the U.S. Department of State or the US Department of Commerce. Please see our Export Policy.


The H&K Mark 23 was originally developed at the request of the U.S. Special Operations Command, and combines the match-grade accuracy of a custom-made pistol with some of the most stringent operational requirements ever demanded from a combat handgun. To ensure the utmost reliability, the Mark 23 had to demonstrate it could be fired at least 2,000 mean rounds between stoppages (MRBS). This test was conducted with both standard ball ammunition and +P ammunition, and resulted in a minimum MRBS of 6,027 and a maximum MRBS of 15,122. Endurance testing confirmed a service life of well-over 30,000 rounds of +P cartridges, and a series of 450 accuracy test firings averaged to a 1.44-inch grouping at 25 meters. 65 of these groupings were less than one inch, and four of these groupings had five rounds going through the same hole. The Mark 23’s reliability, endurance, and accuracy can be partly attributed to an innovative O-ring on the barrel which seals the barrel in the slide until unlocking. Other tests included exposure to a variety of environmental conditions. These included immersion in salt water and surf, contact with salt-fog, sand-dust, and mud, as well test firing in +140 F° and -250 F°. The Mark 23 easily exceeded these environmental requirements thanks to a special maritime surface coating.

In addition to being one of the most thoroughly tested handguns in history, the Mark 23 comes equipped with a wide array of user-friendly features. The barrel is threaded for the installation of muzzle devices, and utilizes a unique polygonal bore profile which increases muzzle velocity and service life, as well as reducing bore fouling. The Mark 23 comes standard with a frame-mounted de-cocking lever which quietly lowers the hammer from the single-action position. When the hammer is down, the ambidextrous safety lever locks into the fire position so that the pistol is always ready for double-action operation. When the hammer is “cocked and locked” in single action mode, the de-cocking lever is blocked so the pistol is always ready for single-action operation. Other features of the Mark 23 include a mechanical recoil reduction system that reduces recoil by up to 30%, an accessory rail, and an ambidextrous magazine release.

Features of the H&K Mark 23:

  • Barrel: Threaded with O-ring and polygonal bore profile for increased muzzle velocity and service life
  • Controls: Ambidextrous safety and magazine release, frame mounted de-cocking lever
  • Other features: Adjustable sights, match-grade trigger, accessory rail, corrosion resistant maritime finish, mechanical recoil reduction system


  • Item ConditionNew
  • Caliber:.45 ACP
  • Weight:38.88 oz.
  • Action:Double Action/Single Action - Semi-Automatic
  • Safety:Ambidextrous thumb lever
  • Sights:Open square notch rear sight with contrast points
  • Magazines Included:2
  • Magazine Capacity:12+1
  • Grips:Black polymer
  • Slide Finish:Black anodized
  • Frame Finish:Fiber reinforced polymer
  • Caliber or Gauge:.45 ACP
  • Pistol Night Sights:No
  • Optics Ready:No
  • Product TypeHandguns
  • UPC642230261587
  • MPN81000078

Customer Reviews

Average Rating
January 8, 2018

This gun just runs! It's built like a tank, and you can feel it the moment you pick it up. Honestly, it's one of the softest shooting .45 ACP's you'll ever shoot. I have friends who usually shoot strictly 9mm's and they've even said that this gun made them reconsider their stance on the cartridge. I don't have super large hands, and I'm able to easily grip this firearm and make accurate follow-up shots with ease. Yes, it's a little heavy. Yes, the mags can be expensive. Yes, it's expensive. Yes, yes, yes, you I've heard it all. But, once you pick this thing up and shoot it--you won't regret a single cent of your purchase. Eurooptic has thee best pricing available on this particular handgun, so I strongly recommend that you purchase from them! Also, shoutout to Derek at customer service, you're the man!

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July 14, 2019

Extremely accurate. Extremely reliable. You will die before it will. A must for any serious collector. A little more muzzle flip than I'd like. Other than that - perfect.

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May 24, 2019

Top of the heap. Nothing else compares...not even close. Love my SIG collection, and the mention of Glock is enough to put a tactical shooter into a full body dry heave. Go HK or die like a pig.

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January 29, 2020

I love love this Gun!!!!

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