The Daniel Defense M4A1 Rifle is a civilian-legal, Mil-Spec AR-platform carbine. It matches the exact specifications of the US military’s current-issue M4A1. This rifle is built for shooters who demand genuine military-grade performance and reliability.
The 14.5-inch cold hammer forged barrel is pinned and welded with an A2 flash hider. This design keeps the rifle at a legal 16-inch overall length as a Title I firearm. No NFA registration is required.
Additionally, every Daniel Defense firearm is hand assembled and quality assurance tested before shipment. Each rifle is also test fired to ensure flawless function out of the box. The forged 7075-T6 upper and lower receivers meet Mil-Spec tolerances for proven long-term reliability.
Materials & Construction
Lower Receiver: Daniel Defense Lower Receiver, Forged 7075-T6 Aluminum, Type III Hard Coat Anodized, Mil-Spec
Upper Receiver: Daniel Defense Upper Receiver, Forged 7075-T6 Aluminum, Type III Hard Coat Anodized, Forward Assist and Dust Cover
Barrel: 14.5″ Cold Hammer Forged, 1:7″ Twist, Chrome Lined, Government Profile, Mil-Spec Heavy Phosphate Coated, with Pinned and Welded Muzzle Device (16″ OAL)
Gas System: Mid-Length Direct Impingement Gas System with Low-Profile Gas Block
Handguard: Daniel Defense RIS II (Rail Interface System II), Free-Float Quad Rail, Continuous 1913 Picatinny Rail on All Four Sides, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized
Bolt Carrier Group: Daniel Defense Bolt Carrier Group, Mil-Spec MP Tested, HPT, with Properly Staked Gas Key
Charging Handle: Daniel Defense Mil-Spec Charging Handle
Trigger: Daniel Defense Mil-Spec Single-Stage Trigger
Buffer: Carbine H Buffer with Mil-Spec Action Spring
Receiver Extension: Daniel Defense Mil-Spec Carbine Receiver Extension, 4-Position
Buttstock: Daniel Defense Mil-Spec Fixed Stock
Pistol Grip: Daniel Defense Mil-Spec A2 Pistol Grip
Specifications
SKU / MPN
DD-02-088-06027-011
Product Type
Complete Rifle
Item Condition
New
Caliber
5.56x45mm NATO / .223 Remington
Barrel
14.5″ Cold Hammer Forged, 1:7″ Twist, Chrome Lined, Government Profile, Mil-Spec Heavy Phosphate Coated, with Pinned and Welded Muzzle Device (16″ OAL)
Gas System
Mid-Length Direct Impingement Gas System with Low-Profile Gas Block
Trigger
Daniel Defense Mil-Spec Single-Stage Trigger
Mounting System
Picatinny (Quad Rail)
Handguard / Rail System
Daniel Defense RIS II (Rail Interface System II), Free-Float Quad Rail, Continuous 1913 Picatinny Rail on All Four Sides, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized
Bolt Carrier Group
Daniel Defense Bolt Carrier Group, Mil-Spec MP Tested, HPT, with Properly Staked Gas Key
Charging Handle
Daniel Defense Mil-Spec Charging Handle
Muzzle Device
A2 Flash Hider, 1/2×28 Threaded, Permanently Pinned and Welded
Buttstock
Daniel Defense Mil-Spec Fixed Stock
Magazine
Magpul PMAG 32 GEN M3 (32-Round)
Approx. Weight
6.9 lb
Why Buy from Western Sport?
Western Sport offers local expertise and personalized guidance from experienced staff.
Our competitive pricing ensures you get genuine Daniel Defense quality at fair market value.
We provide comprehensive after-sale support, including maintenance advice and accessory recommendations.
Fast, reliable shipping gets your rifle to you quickly and securely.
Frequently Asked Questions
Q: What ammunition does the Daniel Defense M4A1 Rifle use?
A: This rifle fires 5.56x45mm NATO or .223 Remington ammunition. Both cartridges are readily available and widely affordable. The Mil-Spec chamber handles military-spec ammunition reliably.
Q: What accessories can I attach to the RIS II rail?
A: The RIS II quad rail provides Picatinny attachment points on all four sides. You can mount lights, lasers, grips, and sights anywhere on the handguard. This modular design gives you unlimited customization options.
Q: How does this compare to the Daniel Defense M4A1 RIII Rifle?
A: Both rifles share the same 14.5-inch cold hammer forged barrel and Mil-Spec construction. The key difference is the handguard: the RIII features a more compact, modern rail system. Your choice depends on whether you prefer the classic RIS II or newer RIII design.
Q: What comes in the box with this rifle?
A: The Daniel Defense M4A1 Rifle ships fully assembled and test fired. It includes the rifle, magazine, and documentation. Nevertheless, you may want to add optics, lights, or accessories based on your intended use.
Great rifle, solid construction, fires very nice and has a beautiful finish from Daniel Defense. WesternSport is a great shop, had to order mine from Afghanistan and these guys definitely exceeded my expectations in getting the order sent through and shipping the rifle to my FFL back home, I appreciate it!
Lance Rankin – :
Thank you for the kind words Jaden. We really do strive to be the best for our customers.
Jaden Benson (verified owner) – :
Great rifle, solid construction, fires very nice and has a beautiful finish from Daniel Defense. WesternSport is a great shop, had to order mine from Afghanistan and these guys definitely exceeded my expectations in getting the order sent through and shipping the rifle to my FFL back home, I appreciate it!
Lance Rankin – :
Thank you for the kind words Jaden. We really do strive to be the best for our customers.