Daniel Defense MK18 SBR 5.56 NATO 10.3in 32rd

The Daniel Defense MK18 SBR is a short-barreled rifle configured for .223 Rem / 5.56 NATO and built around a 10.3 inch cold hammer forged, chrome-lined barrel with a 1-in-7" rate of twist. It features Daniel Defense furniture and a RIS II picatinny handguard with the Bolt-Up System used on fielded MK18 uppers. The rifle ships with a single 32-round Daniel Defense magazine and is finished in matte black anodized.

Key Specifications

• The caliber is .223 Rem / 5.56 NATO.
• The barrel is a 10.3 inch Cold Hammer Forged, chrome-lined configuration.
• The rifling rate is 1-in-7".
• The action is Semi-Auto.
• The capacity is 32 rounds.
• The package includes one 32-round Daniel Defense magazine.
• The handguard is a Daniel Defense RIS II rail with QD points.
• The receiver is CNC-machined 7075-T6 aluminum.
• The muzzle/threads use a 1/2x28 NFA thread pattern.
• The finish is matte black anodized.

Compact and purpose-built for close-quarters configurations, the MK18 SBR combines a short, cold hammer forged barrel with professional-grade rail and receiver components to support a wide range of accessory layouts. Its 1-in-7" twist and chrome-lined bore provide consistent performance with typical 5.56 NATO loads, while the RIS II handguard offers secure mounting and durability. For users seeking a high-performance, compact 5.56 NATO platform, the MK18 delivers a factory-configured SBR option with Daniel Defense engineering and furniture.