The Daniel Defense DD4 MK18 RIII 5.56 10.3" TB M-LOK SBA3 FDE No Mag is a compact AR-15 pistol built around a cold hammer forged 10.3-inch threaded barrel and a rugged RIS III 9.5-inch free-float handguard in flat dark earth. Its carbine-length direct impingement gas system, Daniel Defense flash hider, and mil-spec trigger work together to deliver smooth cycling and consistent accuracy, while the 7075-T6 forged receivers and ambidextrous safety provide a durable, modern control layout.

This DD4 MK18 RIII configuration ships without a magazine and is equipped with an SB Tactical SBA3 brace and DD polymer grip for stable, comfortable handling. The M-LOK RIS III rail offers generous space for lights, optics, and other accessories, making it well suited for training, home defense, and range use where a short, maneuverable 5.56 NATO platform is preferred. It reflects Daniel Defense’s reputation for precise machining, thoughtful ergonomics, and long-term reliability.

Key Features:

• Manufacturer: Daniel Defense
• Model: DD4 MK18 RIII 5.56 10.3" TB M-LOK SBA3 FDE No Mag
• Caliber: 5.56 NATO
• Condition: New
• Action: Semi-Auto
• Barrel Length: 10.3"
• Number of Magazines: 0
• Capacity: No Magazine Included
• Unique Features: Threaded Barrel, RIS III 9.5" Free-Float M-LOK Rail, SBA3 Brace, Ambidextrous Safety
• Threaded Barrel: Yes
• Weight: 5.7 lbs
• Length: 26.75" – 29.88"