Daniel Defense DD4 MK18 RIII SBR 5.56mm Rifle

$2,461.18 14 in stock

Lightweight short-barreled rifle with RIS III rail system, fully ambidextrous controls, and 10.3" chrome-lined barrel. Built for tactical versatility and durability with M-LOK accessory compatibility.

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Daniel Defense DD4 MK18 RIII Short-Barreled Rifle

The MK18 RIII represents a significant evolution of Daniel Defense's proven MK18 platform, delivering a refined package that balances weight savings with operational flexibility.

Key Features

Rail System & Accessories

  • RIS III rail system: an optimized evolution of the SOCOM-developed RIS II design
  • Lighter weight than the RIS II while maintaining extreme durability
  • Multiple M-LOK attachment points for tactical lights, lasers, vertical grips, and other accessories
  • 6-Bolt Bolt-Up system capable of withstanding recoil from an M203 grenade launcher

Controls & Ergonomics

  • Fully ambidextrous controls: safety selector, bolt release, and charging handle
  • Designed for both left and right-handed shooters without repositioning the firing hand
  • Intuitive operation for shooters of any experience level

Barrel & Reliability

  • 10.3" chrome-lined barrel with heavy phosphate coating
  • Government-profile design for compatibility with standard components
  • Optimized for maneuverability in confined spaces
  • Built for durability and consistent performance

The Bottom Line

The MK18 RIII is purpose-built for shooters who demand a compact rifle without compromise. Whether for professional use or serious sport shooting, this rifle delivers the reliability and flexibility that Daniel Defense is known for.

Attributes

Barrel Length: 10.3"
Caliber: 5.56 NATO
Capacity: 32
Metal Finish: Black