Daniel Defense DD4 SPRIII Rifle, 18 Inch Barrel

Description

Built as a semi-automatic AR rifle, the Daniel Defense DD4 SPRIII combines an 18-inch cold hammer forged barrel with a rifle-length gas system and a MK12 profile. Its fully ambidextrous lower, 15-inch RIS III rail, and integrated full-length ARCALOCK bottom panel support a range of controls and accessory mounting options. We point this configuration toward shooters who want a precision-oriented rifle setup with adjustable stock fit and modular mounting space.

Key Specifications

• The rifle uses a semi-automatic action for a familiar operating system.
• The barrel measures 18 inches and uses a cold hammer forged construction.
• The barrel has a MK12 profile for the specified rifle configuration.
• A rifle-length gas system governs the operating system.
• The receiver is made from CNC-machined 7075-T6 aluminum.
• The handguard is a 15-inch RIS III rail with M-LOK (Modular Lock accessory mounting) and a full-length ARCALOCK bottom panel.
• The lower receiver provides fully ambidextrous controls for operation from either side.
• The rifle comes with a Magpul PRS Lite stock for adjustable stock fit.
• Unloaded weight is listed as 8.6 pounds.
• The package includes one magazine and a full-latch impact plastic case.

The DD4 SPRIII brings together a threaded barrel with a 1/2×28 muzzle thread, a DD flash suppressor, and accessory interfaces for M-LOK, ARCA, and ARCALOCK components. The Magpul PRS Lite stock and Daniel Defense grip give the rifle a defined handling setup, while the two-stage curved trigger is listed as non-adjustable. The receiver material, ambidextrous lower, and rifle-length gas system keep the configuration focused on practical controls and a structured shooting position. This is a purpose-built semi-automatic rifle with its defining design choices visible in the barrel, rail, stock, and lower receiver.