HK Heckler & Koch Mark 23 45 ACP 12 Round Capacity 81000078

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The HK Mark 23 Caliber .45 ACP pistol gives shooters match grade accuracy equal to that of the finest custom made handguns — yet exceeds the most stringent operational requirements ever demanded of a combat handgun. The Mark 23 provides this accuracy without the need for hand-fitted parts common in custom-built match pistols costing thousands of dollars more. One of the most thoroughly tested handguns in history, the MK23/Mark 23 project originated in 1991 when HK began development for the U.S. Special Operations Command, the organization that directs the activities of America’s most elite military units, including the Navy SEALs and the Army Special Forces. On May 1, 1996, the first HK MK 23 pistols were delivered to the U.S. Special Operations Command for operational deployment, making the MK 23 the first caliber .45 ACP pistol to enter American military service since the venerable Government Model 1911A1. During testing, MK 23 pistols met the most stringent operational and accuracy requirements ever demanded of a combat handgun. Endurance testing demonstrated a service life of over 30,000 rounds of +P ammunition. To meet the reliability requirement, the pistol had to demonstrate a minimum of 2,000 mean rounds between stoppages (MRBS) with both M1911 ball and +P ammunition. All pistols exceeded the 2000 MRBS with an average of 6000 MRBS. In more than 450 accuracy test firings from a precision firing fixture at 25 meters, MK 23 pistols far exceeded the government requirement, averaging 1.44 inches, with 65 groups of less than one inch. There were four groups of .5 inches, with 5 rounds going through the same hole!



Caliber Overall length Overall height Overall width Barrel length Sight radius
.45 AUTO 9.65 in. 5.90 in. 1.53 in. 5.87 in. 7.76 in.




Caliber With magazine
.45 AUTO 39.36 oz



Other Specifications

Caliber Magazine capacity Single Action (SA) Trigger Pull Double Action (DA) Trigger Pull Sights
.45 AUTO 12 Cartridges 5.17 lb 11.47 lb Fixed (Open square notch rear sight with contrast points)
Categories: Semi Auto Pistols
Condition: New
Manufacturer: Heckler & Koch
Model: Mark 23
Caliber: 45 Auto / ACP
SKU: 642230261587
MPN: 81000078
UPC: 642230261587
Vendor: Gunprime
Reviews (3)
By Bryan H. on 01/19/24
Excellent service... great pricing, fast processing, fast shipping. Gunprime is great.

Gunprime is great. Pistol is exactly as advertised. Can't wait to get it to the range.

By Remco on 05/26/23
My new favorite pistol

I absolutely love this pistol, it was worth every penny. Gunprime had a great price and shipped super quick, they were very easy to order from. This is the ultimate service pistol.

By John O. on 04/10/23
Couldn't ask for more

Arrived in less than 3 days to FFL, best price for BNIB I could find. 2022 production model with all included accessories, 2 mags, lock tool, thread protector, spare o-rings (black), manual, and a cord lock, all packed in the black HK hard case. Had a great time at the range when I took it out, accurate as hell and easy to shoot, a bit big (of course), but wouldn't want it any other way, hands down THE best .45 handgun. Get one.

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