Daniel Defense
Daniel Defense DD4 RIIIS Upper Receiver Group 11.5"
Premium 11.5" 5.56 NATO URG with RIS III M-LOK handguard and cold hammer forged barrel.
Quick Specs
- Price
- $1,517
- Weight
- 3 lb 11.2 oz
- Brand
- Daniel Defense
- Category
- upper
Features
- •5.56 NATO
- •11.5" CHF barrel
- •Carbine gas
- •RIS III 10.5" M-LOK
- •BCG & GRIP-N-RIP CH included
Capability Boosts
Recommended For
Compatibility Tags
Overview
The DD4 RIIIS Upper Receiver Group represents Daniel Defense's latest evolution in short-barreled upper receivers, featuring their new RIS III M-LOK handguard system. Built around a cold hammer forged 11.5" barrel chambered in 5.56x45mm NATO with a 1:7 twist rate, this upper delivers exceptional accuracy and durability for duty, home defense, or recreational shooting applications.
The RIS III 10.5" handguard utilizes Daniel Defense's patented 6-bolt bolt-up mounting system, machined from 6061-T6 aluminum with Type III hard coat anodizing. The M-LOK attachment system provides superior weight savings compared to quad rail alternatives while maintaining the strength and modularity expected from Daniel Defense. The carbine-length gas system ensures reliable cycling across a wide range of ammunition types.
Every DD4 RIIIS ships complete with a mil-spec M16 profile bolt carrier group (MPI tested, chrome lined) and Daniel Defense's GRIP-N-RIP ambidextrous charging handle. The upper receiver is CNC machined from 7075-T6 aluminum with M4 feed ramps and indexing marks. A Daniel Defense flash suppressor in 17-4 PH stainless steel with salt bath nitride finish completes the package.
Key Features
- ✓Cold hammer forged 11.5" barrel, chrome lined, HP/MPI tested
- ✓RIS III 10.5" M-LOK handguard with 6-bolt mounting system
- ✓M16 profile BCG, MPI tested with properly staked gas key
- ✓GRIP-N-RIP ambidextrous charging handle (7075-T6 aluminum)
- ✓Pinned low profile gas block, CNC machined 4140 steel
- ✓7075-T6 aluminum upper receiver with M4 feed ramps
- ✓Daniel Defense flash suppressor (17-4 PH stainless, salt bath nitride)
Pros
- +Daniel Defense quality with lifetime warranty
- +RIS III M-LOK saves weight over quad rail designs
- +Complete package with BCG and charging handle
- +Cold hammer forged barrel for extended service life
- +Ambidextrous charging handle accommodates all shooters
- +Chrome lined barrel and BCG for easy maintenance
Cons
- −Premium pricing above most competitors
- −11.5" barrel requires SBR registration or pistol build
- −RIS III not compatible with legacy DD accessories
- −Heavy compared to lightweight-focused alternatives
Detailed Specifications
- caliber
- 5.56x45mm NATO
- barrelLength
- 11.5"
- barrelProfile
- Government
- barrelMaterial
- Chrome Moly Vanadium Steel, Cold Hammer Forged
- barrelFinish
- Chrome Lined, Mil-Spec Heavy Phosphate
- twist
- 1:7
- gasSystem
- Carbine Length, Direct Impingement
- gasBlock
- Pinned Low Profile, 4140 Steel, Phosphate
- handguard
- RIS III 10.5", 6061-T6 Aluminum, M-LOK
- upperReceiver
- 7075-T6 Aluminum, Type III Hard Coat Anodized
- bcg
- M16 Profile, MPI Tested, Chrome Lined
- chargingHandle
- GRIP-N-RIP, 7075-T6 Aluminum, Ambidextrous
- muzzleDevice
- DD Flash Suppressor, 17-4 PH SS, Salt Bath Nitride
- threadPitch
- 1/2x28
- weight
- 3.7 lbs
- madeIn
- USA
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