The Daniel Defense DD4 SPRIII is a 5.56 NATO rifle designed around the MK12-style platform, incorporating modern components while retaining key characteristics associated with precision-oriented AR-pattern rifles. It features an 18-inch stainless steel MK12-profile barrel with a rifle-length gas system, paired with a low-profile gas block and direct impingement operation. This configuration is intended to support consistent cycling and extended-range performance.
Updates include a 15-inch RIS III handguard with M-LOK compatibility and an integrated ARCALOCK bottom section for mounting bipods and accessories. The rifle is equipped with a Geissele Super Semi-Automatic (SSA) trigger, a Magpul PRS Lite stock for adjustable fit, and fully ambidextrous controls on the lower receiver. The DD4 SPRIII is supplied with a Daniel Defense magazine and ships in a hard plastic case.
Specifications
- Caliber: 5.56mm NATO
- Barrel Length: 18 in
- Barrel Profile: MK12
- Barrel Material: Stainless steel, cold hammer forged
- Twist Rate: 1:7
- Gas System: Rifle-length, direct impingement
- Muzzle Thread: 1/2 × 28 TPI
- Handguard: RIS III 15.0 with M-LOK and full-length ARCALOCK bottom panel
- Trigger: Geissele Super Semi-Automatic (SSA)
- Overall Length: 34 3/4 in – 37 7/8 in (with muzzle device)
- Weight: 8.6 lb
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