The Daniel Defense MK18 RIII pistol is a compact 5.56 NATO firearm built around the proven MK18 configuration. It features a 10.3-inch cold hammer forged barrel, a Flat Dark Earth finish, an ambidextrous RIII lower receiver, and a free-floating RIS III rail for consistent accessory mounting. The semi-automatic direct-impingement action supports familiar AR-style controls, while the threaded muzzle accommodates compatible devices. An optics-ready Picatinny top rail and standard sights provide flexible aiming options for close-range use.

Key features

• 10.3-inch cold hammer forged barrel balances compact handling with 5.56 NATO performance
• RIS III free-floating rail provides a stable platform for lights, lasers, and other accessories
• Ambidextrous RIII controls support convenient operation from either shoulder
• Threaded 1/2x28 muzzle accepts compatible muzzle devices
• Optics-ready Picatinny rail supports a wide range of sighting systems
• Includes a 32-round magazine and polymer pistol grip

The Daniel Defense MK18 RIII delivers compact, configurable 5.56 NATO performance in a factory Flat Dark Earth pistol package.