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Questions & Answers
Do you sell just the screws for this model? I need all 4 Expert Answer

We currently carry the Daniel Defense DDM4/ SLiM/ Lite Rail III Hardware Pack which is compatible with this Daniel Defense DD M4 Rail, and can be found by using the link below:
https://www.opticsplanet.com/daniel-defense-ddm4-slim-lite-rail-iii-hardware-pack.html

by Ethan, Gear Expert, November 4, 2022
will this handguard fit on a palmetto state armory ar10? Expert Answer

The Daniel Defense DD M4 Rail will not work with a PSA PA10.

by Hunter, Gear Expert, December 7, 2022
Customer Reviews
Helpful Positive Review
Top notch rail by Ned, January 8, 2020
What can you say? Top Quality, great strength. Other cheaper rails may be cast or have cheap, weak anodization. Not Daniel Defence. This thing is mulled out if bar stock with MilSpec anodization & laser marked rails.
1/2 found this helpful
Helpful Positive Review
Great rail, Terrible Bolts by Peeps1020, November 1, 2017
I am a huge fan of Daniel Defense rifles and their products but cannot understand for the life of me why they use such horrible screws for the ddm4 and slim rails. I have both rails on different firearms and stripped out the screws on both rails and ...
Read More...
9/10 found this helpful
Helpful Positive Review
Solid, slim and patience needed. by Acries314, Verified Owner, October 19, 2020
Just received this rail [10.18.2020]though it’s my first time utilizing a Daniel Defense rail system, I figured I’d give my 1st impressions. The machining is smooth to the touch, along with three rail covers that are just comfortable. The barrel nut ...
Read More...
1/1 found this helpful
Most Recent Reviews
not happy with the quality and fit by 11bangbang, Verified Owner, September 11, 2025
Before I explain my issues with it I’ll just put this information out there, I am a long time gunsmith and builder, I was infantry in the us army and I am most knowledgeable on the ar platform. I followed all the steps and for whatever magical reason...
Read More...
Most Recent Reviews
perfect rail, lacks tool by hulksfd, Verified Owner, February 27, 2025
Rail fits my DDM4 just like it should, easy to mount. Only thing is use the barrel nut wrench properly or it will spread open.
Most Recent Reviews
awesome rail by Dominic, Verified Owner, November 7, 2024
Awesome rail. Super light but still really solid. And it came with rail covers.
Read All 10 Reviews

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Product Info for Daniel Defense DD M4 Rail

The Daniel Defense DDM4 Rail, found on many DDM4 firearm configurations, features an optimized one-piece, free-floating architecture. This design results in the ergonomics and proven durability users demand while maintaining the lightweight characteristics they expect from Daniel Defense. The DDM4 Rail's ergonomic design allows operators to maintain better control of the firearm. Limited rotation QD swivel attachment points are located at the front and rear of both sides of this rail system for tangle-free attachment for slings. A continuous picatinny rail on top provides the rail real estate for sights and accessories. DDM4 Rail 12.0 rail system is designed to be used in conjunction with a low profile gas block on either a carbine or mid-length gas system. Rail System includes all required hardware (Barrel Nut, Bolt-Up Plate, & Screws) and tools (Barrel Nut Wrench & Allen Wrench).image

Specifications for Daniel Defense DD M4 Rail:

Manufacturer: Daniel Defense
Color: Black
Finish: Type III Hard Coat Anodized
Fabric/Material: Aircraft Grade 6061-T6 Aluminum
Gun Make: AR Platform
Gun Model: M4
Gun Type: Rifle
Gun Rail: Picatinny
Condition: New
Included Accessories: Standard
Inner Diameter: 1.08 in
Quantity: 1

Features of Daniel Defense DD M4 Rail:

  • Lightweight Free Floating Barrel Design
  • Steel Barrel Nut
  • Uninterrupted Upper Rail Platform
  • Integral Sling Swivel Attachment Points with Limited Travel
  • Patented Bolt-Up System
  • Mil-Spec 1913 Picatinny Rails
  • Width - 1.90"
  • Height - 2.16"
  • Barrel Nut Steel (For Patented Bolt-Up System)
  • Free Float - Yes
  • Continuous Upper Rail - Yes
  • Integrated Sling Swivel Attachment Point - Yes

Package Contents:

  • Daniel Defense DD M4 Rail

Daniel Defense DD M4 Rail Orderable Models

List of Orderable Models

  • Daniel Defense DD M4 Rail Mid Length 10 Inch, 01-134-08237 , MPN: 01-134-08237 , UPC: 815604018234 , Code: DDD-HZ-RLMDRF-01-134-08237
  • Daniel Defense DD M4 Rail Mid Length 9 Inch, 01-134-15114 , MPN: 01-134-15114 , UPC: 815604018241 , Code: DDD-HZ-RLMDRF-01-134-15114
  • Daniel Defense DD M4 Rail Rifle Length 15 Inch, 01-134-09186 , MPN: 01-134-09186 , UPC: 815604018227 , Code: DDD-HZ-RLMDRF-01-134-09186
  • Daniel Defense DDM4 Mid-Length Rail System, Black, 12in, 01-134-15163 , MPN: 01-134-15163 , UPC: 815604018258 , Code: DDD-HZ-RLMDRF-01-134-15163

Daniel Defense DD M4 Rail Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Daniel Defense DD M4 Rail Mid Length 10 Inch, 01-134-08237 , MPN: 01-134-08237-EDEMO , Code: DDD-HZ-RLMDRF-01-134-08237-EDEMO-IN-C
  • USED Daniel Defense DD M4 Rail Mid Length 9 Inch, 01-134-15114, EDEMO1, Used, Condition Fair , MPN: 01-134-15114-EDEMO1 , Code: DDD-HZ-RLMDRF-01-134-15114-EDEMO1
  • DEMO, Daniel Defense DD M4 Rail Mid Length 9 Inch, 01-134-15114 , MPN: 01-134-15114-DEMO , Code: DDD-HZ-RLMDRF-01-134-15114-DEMO
  • USED Daniel Defense DD M4 Rail Mid Length 10 Inch, 01-134-08237, EDEMO1, Used, Condition Like New , MPN: 01-134-08237-EDEMO1 , Code: DDD-HZ-RLMDRF-01-134-08237-EDEMO1
  • USED, Daniel Defense DD M4 Rail Mid Length 10 Inch, 01-134-08237 , MPN: 01-134-08237-EDEMO , Code: DDD-HZ-RLMDRF-01-134-08237-EDEMO-RE-A
  • DEMO, Daniel Defense DD M4 Rail Rifle Length 15 Inch, 01-134-09186 , MPN: 01-134-09186-DEMO , Code: DDD-HZ-RLMDRF-01-134-09186-DEMO
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