Daniel Defense120921909
Daniel Defense DD4 MK18 RIII 5.56 NATO 10.3" SBR Tactical Rifle$2,306.00
Availability: In Stock
Current Stock: Out of stock
The Daniel Defense M4A1 DD4 RIII is a 5.56 NATO rifle built for serious shooters who demand reliability, modularity, and ambidextrous controls. This 14.5" barrel rifle is purpose-built for tactical, training, and home defense work—and it comes complete and ready to run, requiring only your choice of sights and optics to get on target.
What sets the DD4 RIII apart is its commitment to true ambidextrous operation. Both left- and right-handed shooters can manipulate the bolt catch, safety selector, and magazine release without shifting their grip. The GRIP-N-RIP charging handle reinforces that philosophy, letting you work the rifle from either shoulder naturally. The lower receiver features a flared magazine well and QD attachment point; both the lower and upper are CNC machined from 7075-T6 aluminum and hard coat anodized to mil-spec standards.
The barrel—cold hammer forged chrome moly vanadium steel with a 1:7 twist rate—is chrome lined and mil-spec heavy phosphate coated, paired with a mid-length direct impingement gas system and pinned low-profile gas block. The muzzle is crowned with Daniel Defense's own flash suppressor, pinned and welded for 14.5" compliance. You get a properly staked mil-spec bolt carrier group and Daniel Defense's ergonomic buttstock and pistol grip, both with soft touch overmolding.
The 12.5" Daniel Defense RIS III handguard replaces the older quad rail with a lighter design that still supports M-LOK attachments and M203 grenade launcher mounting if needed. Everything is CNC machined, properly finished, and made in the USA. The rifle ships at 6.39 lbs in a Daniel Defense hard case with one 30-round magazine.
| Caliber | 5.56mm NATO |
| Barrel Length | 14.5 inches |
| Barrel Profile | M4 |
| Barrel Material | Cold hammer forged chrome moly vanadium steel, chrome lined, mil-spec heavy phosphate coated, HP/MPI tested |
| Twist Rate | 1:7 |
| Gas System | Mid-length direct impingement |
| Gas Block | Pinned low-profile, CNC machined 4140 hardened steel, mil-spec heavy phosphate coated |
| Muzzle Device | Daniel Defense flash suppressor, pinned and welded, 17-4 PH stainless steel, salt bath nitride finished |
| Muzzle Thread | 1/2" - 28 TPI |
| Handguard | Daniel Defense RIS III, 12.5 inches, M-LOK attachment, 6-bolt bolt-up system, flat dark earth, 6061-T6 aluminum |
| Mounting System | M-LOK |
| Upper Receiver | Mil-spec with M4 feed ramps and indexing marks, CNC machined 7075-T6 aluminum, hard coat anodized |
| Lower Receiver | Proprietary with enhanced flared magazine well, fully ambidextrous controls, rear receiver QD swivel attachment point, CNC machined 7075-T6 aluminum, hard coat anodized |
| Bolt Carrier Group | M16 profile, mil-spec, MP tested, chrome lined, properly staked gas key |
| Charging Handle | GRIP-N-RIP ambidextrous, CNC machined aluminum and stainless steel, heavy duty roll pins, hard coat anodized |
| Buffer | H buffer |
| Receiver Extension | 6-position mil-spec, 7075-T6 aluminum |
| Buttstock | Daniel Defense buttstock, glass filled polymer with soft touch overmolding |
| Pistol Grip | Daniel Defense pistol grip, glass filled polymer with soft touch overmolding |
| Overall Length | 31.5 – 34.5 inches (with adjustable buttstock) |
| Weight | 6.39 lbs |
| Magazine | 30-round Daniel Defense magazine (one included) |
| Case | Daniel Defense full-latch impact plastic case |
| Country of Origin | Made in USA |
Absolutely. The entire rifle is designed with ambidextrous operation in mind. The bolt catch, safety selector, magazine release, and charging handle all function equally well for right and left-handed shooters, so you never have to reach across the rifle or break your grip to operate it.
The rifle does not include sights or an optic. You'll need to add your own. The RIS III handguard features M-LOK slots for mounting accessories, and the upper receiver is ready to accept any Picatinny rail-mounted optic or sight system you choose.
No. The flash suppressor is pinned and welded to the barrel as a permanent attachment. This design ensures a fixed 14.5" OAL for compliance and maintains the rifle's zero. If you need a different muzzle device, you would need to replace the entire barrel.
The rifle comes with one 30-round Daniel Defense magazine and a Daniel Defense full-latch impact plastic hard case. Sights, optics, and other accessories are sold separately.
Yes. The DD4 RIII is built on mil-spec standards with a proven direct impingement platform, ambidextrous controls for tactical work, and a modular M-LOK handguard for mounting lights, lasers, and other accessories. Its 14.5" barrel balances handling and velocity for training, competition, or defensive applications.
SKU: 120911762 • Width: 11in • Height: 4in • Depth: 43in • Weight: 12.75oz
Availability: In Stock
Current Stock: Out of stock
The Daniel Defense M4A1 DD4 RIII is a 5.56 NATO rifle built for serious shooters who demand reliability, modularity, and ambidextrous controls. This 14.5" barrel rifle is purpose-built for tactical, training, and home defense work—and it comes complete and ready to run, requiring only your choice of sights and optics to get on target.
What sets the DD4 RIII apart is its commitment to true ambidextrous operation. Both left- and right-handed shooters can manipulate the bolt catch, safety selector, and magazine release without shifting their grip. The GRIP-N-RIP charging handle reinforces that philosophy, letting you work the rifle from either shoulder naturally. The lower receiver features a flared magazine well and QD attachment point; both the lower and upper are CNC machined from 7075-T6 aluminum and hard coat anodized to mil-spec standards.
The barrel—cold hammer forged chrome moly vanadium steel with a 1:7 twist rate—is chrome lined and mil-spec heavy phosphate coated, paired with a mid-length direct impingement gas system and pinned low-profile gas block. The muzzle is crowned with Daniel Defense's own flash suppressor, pinned and welded for 14.5" compliance. You get a properly staked mil-spec bolt carrier group and Daniel Defense's ergonomic buttstock and pistol grip, both with soft touch overmolding.
The 12.5" Daniel Defense RIS III handguard replaces the older quad rail with a lighter design that still supports M-LOK attachments and M203 grenade launcher mounting if needed. Everything is CNC machined, properly finished, and made in the USA. The rifle ships at 6.39 lbs in a Daniel Defense hard case with one 30-round magazine.
| Caliber | 5.56mm NATO |
| Barrel Length | 14.5 inches |
| Barrel Profile | M4 |
| Barrel Material | Cold hammer forged chrome moly vanadium steel, chrome lined, mil-spec heavy phosphate coated, HP/MPI tested |
| Twist Rate | 1:7 |
| Gas System | Mid-length direct impingement |
| Gas Block | Pinned low-profile, CNC machined 4140 hardened steel, mil-spec heavy phosphate coated |
| Muzzle Device | Daniel Defense flash suppressor, pinned and welded, 17-4 PH stainless steel, salt bath nitride finished |
| Muzzle Thread | 1/2" - 28 TPI |
| Handguard | Daniel Defense RIS III, 12.5 inches, M-LOK attachment, 6-bolt bolt-up system, flat dark earth, 6061-T6 aluminum |
| Mounting System | M-LOK |
| Upper Receiver | Mil-spec with M4 feed ramps and indexing marks, CNC machined 7075-T6 aluminum, hard coat anodized |
| Lower Receiver | Proprietary with enhanced flared magazine well, fully ambidextrous controls, rear receiver QD swivel attachment point, CNC machined 7075-T6 aluminum, hard coat anodized |
| Bolt Carrier Group | M16 profile, mil-spec, MP tested, chrome lined, properly staked gas key |
| Charging Handle | GRIP-N-RIP ambidextrous, CNC machined aluminum and stainless steel, heavy duty roll pins, hard coat anodized |
| Buffer | H buffer |
| Receiver Extension | 6-position mil-spec, 7075-T6 aluminum |
| Buttstock | Daniel Defense buttstock, glass filled polymer with soft touch overmolding |
| Pistol Grip | Daniel Defense pistol grip, glass filled polymer with soft touch overmolding |
| Overall Length | 31.5 – 34.5 inches (with adjustable buttstock) |
| Weight | 6.39 lbs |
| Magazine | 30-round Daniel Defense magazine (one included) |
| Case | Daniel Defense full-latch impact plastic case |
| Country of Origin | Made in USA |
Absolutely. The entire rifle is designed with ambidextrous operation in mind. The bolt catch, safety selector, magazine release, and charging handle all function equally well for right and left-handed shooters, so you never have to reach across the rifle or break your grip to operate it.
The rifle does not include sights or an optic. You'll need to add your own. The RIS III handguard features M-LOK slots for mounting accessories, and the upper receiver is ready to accept any Picatinny rail-mounted optic or sight system you choose.
No. The flash suppressor is pinned and welded to the barrel as a permanent attachment. This design ensures a fixed 14.5" OAL for compliance and maintains the rifle's zero. If you need a different muzzle device, you would need to replace the entire barrel.
The rifle comes with one 30-round Daniel Defense magazine and a Daniel Defense full-latch impact plastic hard case. Sights, optics, and other accessories are sold separately.
Yes. The DD4 RIII is built on mil-spec standards with a proven direct impingement platform, ambidextrous controls for tactical work, and a modular M-LOK handguard for mounting lights, lasers, and other accessories. Its 14.5" barrel balances handling and velocity for training, competition, or defensive applications.
SKU: 120911762 • Width: 11in • Height: 4in • Depth: 43in • Weight: 12.75oz