Daniel Defense DD4 MK18 RIII 5.56mm AR-15 Pistol, 10.3" Barrel, SBA3 Brace, Black/FDE Overview The Daniel Defense DD4 MK18 RIII combines the proven MK18 platform with the Daniel Defense RIS III Rail Interface System. The compact AR-15-style pistol features a 10.3" cold hammer-forged Government-profile barrel, carbine-length gas system, and free-float RIS III handguard with M-LOK attachment points. The pistol is built around CNC-machined 7075-T6 aluminum receivers and features an independently ambidextrous GRIP-N-RIP charging handle, Daniel Defense pistol grip, and SB Tactical SBA3 pistol stabilizing brace. The RIS III handguard provides an uninterrupted Picatinny top rail, M-LOK attachment points, and integrated QD swivel attachment points. Key Features 5.56mm NATO chambering 10.3" cold hammer-forged barrel Government-profile, chrome-lined barrel 1:7 twist rate Carbine-length direct-impingement gas system Daniel Defense 9.5" RIS III free-float handguard M-LOK attachment system Full-length Mil-Spec 1913 Picatinny top rail Integrated QD swivel attachment points Independently ambidextrous GRIP-N-RIP charging handle SB Tactical SBA3 pistol stabilizing brace Daniel Defense ergonomic pistol grip M16-profile bolt carrier group Three heat-resistant Santoprene rail ladders Black/FDE finish Made in the USA Specifications Manufacturer: Daniel Defense Model: DD4 MK18 RIII Firearm Type: AR-15 Style Pistol Caliber: 5.56mm NATO Action: Semi-Automatic Capacity: 32 Rounds (1 magazine included) Barrel Length: 10.3" Barrel Profile: Government Barrel Type: Cold Hammer Forged Barrel Material: Chrome Moly Vanadium Steel Barrel Twist: 1:7 Barrel Finish: Mil-Spec Heavy Phosphate Barrel: Chrome Lined, HP/MPI Tested Gas System: Carbine Length, Direct Impingement Muzzle Thread: 1/2x28 TPI Muzzle Device: Daniel Defense Flash Suppressor Handguard: Daniel Defense 9.5" RIS III Mounting System: M-LOK Upper Receiver: 7075-T6 Aluminum Lower Receiver: 7075-T6 Aluminum Receiver Finish: Type III Hard Coat Anodized Charging Handle: GRIP-N-RIP Bolt Carrier Group: M16 Profile, Chrome Lined, MP Tested Buffer: H Buffer Receiver Extension: 6-Position Mil-Spec Brace: SB Tactical SBA3 Pistol Grip: Daniel Defense Sights: Sold Separately Overall Length: 26-3/4"-29-7/8" with muzzle device Weight: 5.27 lbs. Magazine: DD Magazine Case: Daniel Defense Full-Latch Impact Plastic Case Country of Origin: USA MPN: 02-191-13295-047UPC: 818773025232 Included Features Daniel Defense 9.5" RIS III Handguard SB Tactical SBA3 Pistol Stabilizing Brace Daniel Defense Pistol Grip Three Santoprene Low-Profile Rail Ladders Daniel Defense Flash Suppressor DD Magazine Daniel Defense Full-Latch Impact Plastic Case Applications The DD4 MK18 RIII is designed as a compact AR-15-style pistol incorporating the MK18's 10.3" barrel configuration with the lighter and more versatile RIS III handguard system. Its compact dimensions, M-LOK attachment points, full-length top rail, and ambidextrous controls make it suitable for range use and other applications where a compact firearm platform is desired. Please check out our special deals on 5.56mm ammo.