Daniel Defense DDM4 MK18 Pistol 5.56 NATO 10.3 Inch

Description

We stock the Daniel Defense DDM4 MK18 as a semi-automatic AR pistol chambered in .223 Remington and 5.56 NATO. Its 10.3-inch barrel pairs with a carbine-length gas system and a RIS II Picatinny rail. The configuration includes a pistol brace and no included sights, leaving the top rail available for an optic or other sighting system.

Key Specifications

• The pistol is chambered for .223 Remington and 5.56 NATO, supporting the two designations listed for this configuration.
• The barrel measures 10.3 inches and uses a cold hammer-forged construction.
• The barrel is chrome-lined and has a black phosphate finish as listed in the product data.
• The action operates as semi-automatic for a familiar AR-style manual of operation.
• The gas system is carbine length, matching the configuration specified for this pistol.
• The upper and lower receivers are CNC machined from 7075-T6 aluminum.
• The handguard uses a RIS II Picatinny rail for mounting compatible accessories.
• The pistol has no sights included, so the sighting setup remains open to the buyer.
• The muzzle is threaded 1/2×28 according to the listed thread pattern.
• The package includes one magazine and a pistol brace.

The 10.3-inch barrel keeps this configuration compact while the RIS II handguard provides an established mounting interface. We like this setup for range sessions and training where a compact AR pistol format and configurable sighting arrangement are useful. The receiver construction, chrome-lined barrel, and hardcoat-anodized aluminum handguard are specific design choices that keep the build focused on serviceable materials and a familiar platform. The Daniel Defense DDM4 MK18 remains the product itself.