Daniel Defense DDM4 MK18 5.56 NATO AR Pistol | 10.3" Chrome-Lined Barrel | LAW Gen-3M Folding Adapter
The Daniel Defense DDM4 MK18 pistol delivers the combat-proven CQBR configuration in a compact, brace-equipped package. Built around a 10.3-inch cold-hammer-forged, chrome-lined barrel and the NSN-marked MK18 RIS II quad rail, this custom pistol adds a LAW Tactical Gen-3M folding adapter for easier transport and storage. Ambidextrous controls, a rugged Type III hard-coat anodized receiver set, and a factory 32-round magazine round out a platform designed for reliability and versatility.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: Minor superficial scratches and small blemishes are present on the exterior surfaces, consistent with careful handling. The bore remains bright and shiny.
What’s Included
- Daniel Defense molded hard case
- Blue Force Gear Vickers Combat Applications Sling
- 1× 32-round Daniel Defense polymer magazine
The heart of this pistol is Daniel Defense’s 10.3-inch CMV steel barrel. It is cold-hammer-forged, chrome-lined, and threaded 1/2-28, yielding long service life and compatibility with common muzzle devices.
The MK18 RIS II free-float quad rail (NSN 1005-01-548-1385) provides a durable 6061-T6 aluminum interface for lights, lasers, and other rail-mounted accessories. Its lineage ties directly to the U.S. Navy’s CQBR program, making this pistol instantly recognizable to enthusiasts.
A LAW Tactical Gen-3M folding adapter mates the forged receiver extension to the polymer brace, allowing the entire assembly to fold for compact storage without altering the direct-impingement operating system.
Ambidextrous controls—safety selector and charging handle—enhance usability for both right- and left-handed shooters. Selector markings are the Daniel Defense pictograph SAFE/SEMI icons.
The lower and upper receivers are forged from 7075-T6 aluminum and finished in a Type III hard-coat anodized matte black, matching the pistol’s subdued, duty-ready appearance.