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Heckler & Koch Mark 23 for Sale

Founded: 1949

HQ: Germany

The Heckler & Koch Mark 23 is a full-size, hammer-fired DA/SA short-recoil semi-automatic pistol in .45 ACP featuring a threaded O-ring barrel with polygonal rifling. It was developed as an offensive handgun for special operations under the OHWS program.

Heckler & Koch Mark 23 Auctions

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Heckler & Koch Mark 23 H&K 45 ACP 5.87 SOCOM MK23 MK DA/SA +2 MAGS, OG CASE

Heckler & Koch Mark 23 H&K 45 ACP 5.87 SOCOM MK23 MK DA/SA +2 MAGS, OG CASE

Heckler & Koch Mark 23 HK 45ACP MK23 MK GERMAN

Recently Sold

1997 Heckler & Koch Mark 23 H&K 45 ACP 5.87" MK +4 MAGS, FAUX SUPPRESSOR

Sold On 08/24/2026

1997 Heckler & Koch Mark 23 H&K 45 ACP 5.87" MK +4 MAGS, FAUX SUPPRESSOR

Heckler & Koch Mark 23 HK 45ACP DA/SA MK23 MK

Heckler & Koch Mark 23 45 ACP 6" H&K MK23 MK DA/SA +2 MAGS & ORIG CASE

Sold On 08/14/2026

Heckler & Koch Mark 23 45 ACP 6" H&K MK23 MK DA/SA +2 MAGS & ORIG CASE

Heckler & Koch Mark 23 45AC H&KP MK23 MK GERMAN

Heckler & Koch Mark 23 45 ACP 5.87" H&K MK23 Threaded +2 MAGS & ORIG CASE

Sold On 06/28/2026

Heckler & Koch Mark 23 45 ACP 5.87" H&K MK23 Threaded +2 MAGS & ORIG CASE

Heckler & Koch Mark 23 HK MK23 MK DA/SA GERMAN

Heckler & Koch Mark 23 H&K MK23 45 ACP 6" USSOCOM +2 MAGS & ORIG CASE

Sold On 06/03/2026

Heckler & Koch Mark 23 H&K MK23 45 ACP 6" USSOCOM +2 MAGS & ORIG CASE

Heckler & Koch Mark 23 HK MK23 45ACP DA/SA GERMAN

Heckler & Koch Mark 23 45 ACP H&K MK23 MK 5.87" SOCOM +2 MAGS & ORIG CASE

Sold On 05/19/2026

Heckler & Koch Mark 23 45 ACP H&K MK23 MK 5.87" SOCOM +2 MAGS & ORIG CASE

Heckler & Koch Mark 23 45ACP H&K DA/SA OHWS GERMAN

SOCOM Heckler & Koch HK Mark 23 MK23 45 ACP 5.87" +2 MAGS

Sold On 04/03/2026

SOCOM Heckler & Koch HK Mark 23 MK23 45 ACP 5.87" +2 MAGS

H&K MK 23 MK23 45ACP THREADED BARREL DA/SA

SOCOM Heckler & Koch H&K Mark 23 45 ACP 5.87" MK23 +4 MAGS & ORIG CASE

Sold On 03/18/2026

SOCOM Heckler & Koch H&K Mark 23 45 ACP 5.87" MK23 +4 MAGS & ORIG CASE

Heckler & Koch HK Mark 23 MK23 45ACP DA/SA

Heckler & Koch Mark-23 45ACP 5.87" MK23 +ORIG CASE

Sold On 03/16/2026

Heckler & Koch Mark-23 45ACP 5.87" MK23 +ORIG CASE

H&K HK Mark MK-23 45ACP SOCOM-USP Style DA/SA

Heckler & Koch H&K HK Mark 23 45 ACP 5.87" MK23 Pistol +2 MAGS & ORIG CASE

Sold On 02/20/2026

Heckler & Koch H&K HK Mark 23 45 ACP 5.87" MK23 Pistol +2 MAGS & ORIG CASE

Heckler & Koch H&K HK Mark 23 MK23 MK 45ACP DA/SA

SOCOM! Heckler & Koch Mark 23 45ACP 5.87" MK23 +2 MAGS & ORIG CASE

Sold On 02/16/2026

SOCOM! Heckler & Koch Mark 23 45ACP 5.87" MK23 +2 MAGS & ORIG CASE

H&K HK MK23 45ACP MK-23 Suppressor-Ready DA/SA

SOCOM Heckler & Koch HK Mark 23 Commercial 45 ACP 5.87" MK23 +2 MAGS

Sold On 02/11/2026

SOCOM Heckler & Koch HK Mark 23 Commercial 45 ACP 5.87" MK23 +2 MAGS

Heckler & Koch H&K Mark 23 MK23 45ACP ORIG CASE

SOCOM Heckler & Koch H&K Mark 23 45 ACP MK23 +4 MAGS, ORIG CASE & HOLSTER

Sold On 01/28/2026

SOCOM Heckler & Koch H&K Mark 23 45 ACP MK23 +4 MAGS, ORIG CASE & HOLSTER

Heckler & Koch HK Mark 23 45ACP DA/SA MK23 MK

SOCOM! Heckler & Koch Mark-23 45 ACP 5.87" MK23 +2 MAGS

Sold On 01/26/2026

SOCOM! Heckler & Koch Mark-23 45 ACP 5.87" MK23 +2 MAGS

H&K HK Mark-23 MK23 45ACP DA/SA USP USP45 Style

Heckler & Koch H&K HK Mark 23 45 ACP 5.87" MK23 MK Defense Pistol +2 MAGS

Sold On 01/21/2026

Heckler & Koch H&K HK Mark 23 45 ACP 5.87" MK23 MK Defense Pistol +2 MAGS

Heckler & Koch H&K HK Mark 23 MK23 MK 45ACP DA/SA

USSOCOM Heckler & Koch Mark 23 45 ACP 5.87" MK23 MK +2 MAGS & ORIG CASE

Sold On 10/27/2025

USSOCOM Heckler & Koch Mark 23 45 ACP 5.87" MK23 MK +2 MAGS & ORIG CASE

LIMITED H&K HK Mark 23 MK23 MK 45ACP DA/SA

SOCOM! Heckler & Koch Mark 23 45-ACP 6" MK23 +2 MAGS & ORIG CASE

Sold On 10/24/2025

SOCOM! Heckler & Koch Mark 23 45-ACP 6" MK23 +2 MAGS & ORIG CASE

H&K HK Mark23 German 45ACP MK-23 45-AUTO

SOCOM! Heckler & Koch Mark-23 45ACP 5.87" MK23 MK-23 +2 MAGS & ORIG CASE

Sold On 09/29/2025

SOCOM! Heckler & Koch Mark-23 45ACP 5.87" MK23 MK-23 +2 MAGS & ORIG CASE

H&K (HK) Mark-23 45-ACP DA/SA 45-AUTO German-Duty

Heckler & Koch H&K HK Mark 23 FDE 45 ACP 5.87" Two-Tone MK23 MK +2 MAGS

Sold On 09/19/2025

Heckler & Koch H&K HK Mark 23 FDE 45 ACP 5.87" Two-Tone MK23 MK +2 MAGS

THREADED Heckler & Koch H&K HK Mark 23 .45-Auto

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SOCOM SPEC! Heckler & Koch (HK) Mark 23 45ACP 5.87" MK23

Sold On 09/17/2025

SOCOM SPEC! Heckler & Koch (HK) Mark 23 45ACP 5.87" MK23

Heckler & Koch H&K Mark-23 MK23 MK 45-AUTO DA/SA

Heckler & Koch (H&K-HK) Mark 23 SOCOM 45 ACP H&K-HK- MK23 MK-23 DA/SA

Sold On 01/24/2025

Heckler & Koch (H&K-HK) Mark 23 SOCOM 45 ACP H&K-HK- MK23 MK-23 DA/SA

Heckler & Koch (H&K-HK) Mark 23 2 MAGS & ORIG CASE

Heckler & Koch Mark 23 45 ACP H&K-HK-Mark 23 MK23 MK-23 +OG CASE & HOLSTERS

Sold On 12/23/2024

Heckler & Koch Mark 23 45 ACP H&K-HK-Mark 23 MK23 MK-23 +OG CASE & HOLSTERS

Heckler & Koch (H&K-HK) Mark 23 MK23 MK-23 +2 MAGS

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" H&K-HK-Mark 23 MK23 MK-23 MAGS

Sold On 11/18/2024

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" H&K-HK-Mark 23 MK23 MK-23 MAGS

Heckler & Koch (H&K-HK) Mark 23 MK23 MK-23 DA/SA

Heckler & Koch (H&K-HK) Mark 23 45 ACP 6" H&K-HK-Mark 23 2 MAGS & ORIG CASE

Sold On 10/04/2024

Heckler & Koch (H&K-HK) Mark 23 45 ACP 6" H&K-HK-Mark 23 2 MAGS & ORIG CASE

Heckler & Koch (H&K-HK) Mark 23 MK23 MK-23 DA/SA

SOCOM Heckler & Koch (H&K-HK) MARK 23 45 ACP 5.87" Blued MK-23 MK23 DA/SA

Sold On 04/15/2024

SOCOM Heckler & Koch (H&K-HK) MARK 23 45 ACP 5.87" Blued MK-23 MK23 DA/SA

Heckler & Koch (H&K-HK) MARK 23 MK-23 MK23 +2 MAGS

SOCOM Heckler & Koch (H&K-HK) MARK 23 45 ACP 5.87" Blued MK-23 MK23 DA/SA

Sold On 04/05/2024

SOCOM Heckler & Koch (H&K-HK) MARK 23 45 ACP 5.87" Blued MK-23 MK23 DA/SA

Heckler & Koch (H&K-HK) MARK 23 MK-23 MK23 +2 MAGS

Heckler & Koch (H&K-HK) MARK 23 45 ACP 5.87" Blued H&K-HK MK-23 MK23 DA/SA

Sold On 03/29/2024

Heckler & Koch (H&K-HK) MARK 23 45 ACP 5.87" Blued H&K-HK MK-23 MK23 DA/SA

Heckler & Koch SOCOM MARK 23 MK-23 MK23 +2 MAGS

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" H&K-HK-Mark 23 MK-23 MK23 MAGS

Sold On 02/29/2024

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" H&K-HK-Mark 23 MK-23 MK23 MAGS

Heckler & Koch SOCOM Mark 23 MK-23 MK23 DA/SA

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" SOCOM MK-23 ORIG CASE

Sold On 02/08/2024

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" SOCOM MK-23 ORIG CASE

Heckler & Koch (H&K-HK) Mark 23 MK-23 +4 MAGS

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" H&K-HK Mark-23 MK-23 ORIG CASE

Sold On 01/04/2024

Heckler & Koch (H&K-HK) Mark 23 45 ACP 5.87" H&K-HK Mark-23 MK-23 ORIG CASE

Heckler & Koch (H&K-HK) Mark 23 MK-23 +2 MAGS

ORIG CASE Heckler & Koch Mark 23 Tactical 45-ACP DA/SA H&K Threaded H&K

Sold On 08/10/2023

ORIG CASE Heckler & Koch Mark 23 Tactical 45-ACP DA/SA H&K Threaded H&K

Heckler & Koch (H&K, HK) Mark 23