Connecticut FirearmsCatalogue entry
Home / Shop / Pistols
Heckler & Koch Mark 23 Threaded Barrel .45 ACP OD Green Pistol

The Heckler & Koch Mark 23 is a full-size .45 ACP semi-automatic pistol developed for demanding service use. It features a 5.87-inch threaded barrel, an ambidextrous manual safety and decocker, fixed 3-dot sights, and a durable polymer grip frame. Its 10+1 capacity and ergonomic controls provide a practical combination of shootability, handling, and robust construction.

Key features

  • .45 ACP chambering delivers substantial defensive and duty performance
  • 10+1 capacity supports extended shooting between reloads
  • 5.87-inch threaded barrel uses a 0.578x28 thread pitch for compatible muzzle accessories
  • Ambidextrous manual safety and decocker accommodate left- and right-handed users
  • Fixed 3-dot sights provide a clear, familiar sight picture
  • Polymer grip frame promotes durable, comfortable handling

The Heckler & Koch Mark 23 combines a threaded barrel, ambidextrous controls, and proven .45 ACP performance in a distinctive full-size service pistol configuration.

Heckler & Koch Mark 23 Threaded Barrel .45 ACP OD Green: quick facts

What caliber is the Heckler & Koch Mark 23 Threaded Barrel .45 ACP OD Green?
It is chambered in .45 ACP.
How many rounds does it hold?
10+1 rounds; magazines included: 2.
How big and heavy is it?
Barrel length 5.87 inches, overall length 9.65 inches, weight 2.4 pounds.
What kind of action does it use?
Semi-Automatic.
Is it optic ready or threaded?
Optic ready: No; threaded barrel: Yes.
What sights and finish does it have?
Sights: Standard Sights; finish: OD Green.
Is it new or used?
New, in the original packaging.
Can I buy it in Connecticut?
Yes. It ships to a licensed FFL dealer in Connecticut; you pick it up there after the background check. Connecticut buyers need a pistol permit or Handgun Eligibility Certificate, and the Connecticut dealer will only transfer this model if it and its magazines (10 rounds or fewer) are legal in Connecticut.
Is it in stock?
Yes, at $2942.39. Orders leave within 1-2 business days; shipping is free over $999.

Similar pistols in stock

Shop all →