Daniel Defense DD4 MK18 RIII 5.56 NATO 10.3″ FDE

The Daniel Defense DD4 MK18 RIII is a semi-automatic 5.56 NATO AR-pattern firearm with a 10.3-inch barrel and compact overall configuration. It combines a RIS III handguard, SBA3 brace, and Flat Dark Earth finish for a practical platform suited to range use and accessory configuration.

Key Specifications

• The chambering is 5.56 NATO for compatibility with the listed caliber specification.
• The barrel measures 10.3 inches for a compact configuration.
• The firearm uses a semi-automatic action.
• The handguard is a Daniel Defense RIS III design with M-LOK accessory mounting.
• The listed brace is an SB Tactical SBA3.
• The barrel has a 1:7 twist rate.
• The barrel profile is identified as government profile.
• The barrel is described as cold hammer forged.
• The gas system is identified as carbine length.
• The firearm includes a flash hider.

With its compact 10.3-inch barrel, RIS III handguard, adjustable SBA3 brace, and established Daniel Defense configuration, the DD4 MK18 RIII provides a focused option for shooters seeking a maneuverable 5.56 NATO platform with flexible accessory-mounting capability.

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