Daniel Defense
Daniel Defense M4A1 RIII Upper Receiver Group 14.5"
Premium 14.5" 5.56 NATO URG with RIS III M-LOK handguard, pinned and welded to 16" OAL.
Quick Specs
- Price
- $1,612
- Weight
- 4 lb
- Brand
- Daniel Defense
- Category
- upper
Features
- •5.56 NATO
- •14.5" CHF barrel (16" P&W)
- •Mid-length gas
- •RIS III 12.5" M-LOK
- •BCG & GRIP-N-RIP CH included
Capability Boosts
Recommended For
Compatibility Tags
Overview
The M4A1 RIII Upper Receiver Group is Daniel Defense's flagship 14.5" offering, combining their proven M4A1 barrel profile with the new RIS III M-LOK handguard system. The 14.5" cold hammer forged barrel features a pinned and welded extended flash suppressor to achieve 16" overall barrel length for non-NFA compliance, making this an ideal choice for rifle builds without SBR registration.
The mid-length gas system provides smooth, reliable cycling with reduced felt recoil compared to carbine-length systems, while also extending component life. The RIS III 12.5" handguard offers generous rail real estate for lights, lasers, and accessories through its M-LOK attachment points, while the full-length Picatinny top rail accommodates any optic mounting solution.
This complete upper receiver group includes Daniel Defense's M16 profile bolt carrier group (MPI tested with properly staked gas key) and the GRIP-N-RIP ambidextrous charging handle. Every component meets Daniel Defense's exacting quality standards, backed by their lifetime warranty.
Key Features
- ✓Cold hammer forged 14.5" barrel (16" with P&W flash suppressor)
- ✓M4 Government barrel profile, chrome lined, HP/MPI tested
- ✓RIS III 12.5" M-LOK handguard with 6-bolt mounting system
- ✓Mid-length gas system for smooth cycling
- ✓M16 profile BCG, MPI tested with properly staked gas key
- ✓GRIP-N-RIP ambidextrous charging handle
- ✓Daniel Defense extended flash suppressor, pinned and welded
Pros
- +NFA-exempt: 16" OAL with pinned and welded flash suppressor
- +Mid-length gas provides smooth operation and extended part life
- +Complete package with BCG and ambidextrous charging handle
- +RIS III M-LOK offers modern mounting with weight savings
- +Daniel Defense quality and lifetime warranty
- +Chrome lined barrel for durability and easy cleaning
Cons
- −Premium pricing
- −Pinned flash suppressor cannot be easily changed
- −Not compatible with suppressors without suppressor-height mount
- −Heavier than lightweight-focused alternatives
Detailed Specifications
- caliber
- 5.56x45mm NATO
- barrelLength
- 14.5" (16" with P&W muzzle device)
- barrelProfile
- M4 Government
- barrelMaterial
- Chrome Moly Vanadium Steel, Cold Hammer Forged
- barrelFinish
- Chrome Lined, Mil-Spec Heavy Phosphate
- twist
- 1:7
- gasSystem
- Mid-Length, Direct Impingement
- gasBlock
- Pinned Low Profile, 4140 Steel, Phosphate
- handguard
- RIS III 12.5", 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 Extended Flash Suppressor, Pinned & Welded
- threadPitch
- 1/2x28
- madeIn
- USA
Compatible Platforms
+168 morePairs Well With
Top matchesLMT
LMT MWS MRGG-A Reference Rifle 6.5 Creedmoor 14.5" SBR
4 shared compatibility tags
Heckler & Koch
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4 shared compatibility tags
LWRC International
LWRC IC MKII 16.1"
4 shared compatibility tags
B&T
B&T APC223
3 shared compatibility tags
Sig Sauer
Sig MCX Virtus Patrol 16"
3 shared compatibility tags
Sig Sauer
Sig MCX Spear-LT 11.5"
3 shared compatibility tags
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Build Your Custom Configuration
Add the Daniel Defense M4A1 RIII Upper Receiver Group 14.5" to your build and see how it enhances your platform.