Daniel Defense DDM4, 5.56 NATO, 10.3″ Cold Hammer Forged Barrel, Bazooka Green, DD4 Flat Front 9.5″ Rail, 30RD GN Brc

Product Description

The Daniel Defense DDM4 5.56 NATO braced pistol delivers compact, maneuverable firepower in a Title I handgun package. This configuration pairs a 10.3-inch cold hammer forged barrel with the Maxim PDW stabilizing brace, letting you carry serious capability without NFA paperwork.

Every Daniel Defense firearm is hand assembled, quality assurance tested, and test fired before shipment. The forged 7075-T6 receivers and Type III hard coat anodized Bazooka Green finish meet the same Mil-Spec standards Daniel Defense builds its duty rifles on.

The DD4 Flat Front 9.5″ M-LOK rail free-floats the barrel and runs close to the muzzle. Additionally, the carbine-length direct impingement gas system cycles reliably in this compact platform. The ambidextrous safety selector works identically for left- and right-handed shooters.

Compact 5.56 NATO Pistol Built for Accuracy and Control

The 10.3-inch barrel mirrors special operations M4A1 lengths and accepts standard 5.56 flash suppressors, compensators, and suppressors via its 1/2×28 threaded muzzle. The Maxim PDW brace collapses far shorter than mil-spec carbine units and carries its own buffer system for consistent cycling.

Materials & Construction

• Action: Semi-Automatic, Direct Impingement
• Lower Receiver: Daniel Defense DDM4 Lower Receiver, Forged 7075-T6 Aluminum, Type III Hard Coat Anodized, Ambidextrous Safety Selector
• Upper Receiver: Daniel Defense DDM4 Upper Receiver, Forged 7075-T6 Aluminum, Type III Hard Coat Anodized, Forward Assist and Dust Cover
• Barrel: 10.3″ Cold Hammer Forged, Daniel Defense Proprietary Heavy Profile, 1:7″ Twist, Chrome Lined, 1/2×28 Threaded Muzzle
• Gas System: Carbine-Length Direct Impingement Gas System with Low-Profile Gas Block
• Handguard: Daniel Defense DD4 Flat Front 9.5″ M-LOK Rail, Free-Float, M-LOK Attachment Points, Continuous Top 1913 Picatinny Rail, 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
• Receiver Extension: Maxim Defense Proprietary Receiver Extension with Integrated Buffer System (supplied as part of the Maxim PDW brace assembly)
• Stabilizing Brace: Maxim PDW Stabilizing Brace, Multi-Position Adjustable, Collapsing
• Pistol Grip: Daniel Defense Pistol Grip, Glass-Filled Polymer with Soft-Touch Overmolding

Specifications

This firearm ships from the factory with a pistol stabilizing brace attached to a pistol-length receiver extension, configured as a pistol — not a rifle. A 2024 federal court ruling vacated ATF’s 2023 rule that reclassified braced pistols as Short-Barreled Rifles (SBRs), and the government dropped its appeal of that ruling in 2025. As a result, a stabilizing brace alone no longer causes a pistol to be treated as an SBR under the National Firearms Act (NFA). As configured and shipped, this pistol requires no NFA registration or tax stamp — only the standard ATF Form 4473 background check at transfer. Permanently configuring this firearm with a shoulder stock, however, would create an SBR requiring an approved ATF Form 1 before modification. Western Sport cannot advise on individual compliance — buyers are responsible for following all applicable federal, state, and local law.

Why Buy from Western Sport?

• Western Sport brings local expertise and hands-on knowledge of Daniel Defense pistols to every customer.
• Furthermore, our staff provides personal guidance on accessories, ammunition, and platform selection for your needs.
• We offer competitive pricing on factory-direct Daniel Defense firearms, backed by transparent inventory and fast shipping.
• Additionally, we stand behind every sale with after-purchase support and answers to your operational questions.
• Finally, buying local means you support a trusted community retailer dedicated to the sporting and tactical community.

Frequently Asked Questions

Q: What ammunition does this pistol shoot, and how does 5.56 NATO compare to .223 Remington?

A: This DDM4 fires 5.56x45mm NATO and .223 Remington interchangeably. NATO specification rounds are loaded to slightly higher pressure, so they function reliably in this platform. Both deliver consistent accuracy and velocity from the 10.3-inch barrel.

Q: What optics, lights, and magazines work with this pistol?

A: The DD4 Flat Front 9.5″ M-LOK rail and continuous top 1913 Picatinny rail accept standard AR-pattern lights, lasers, and hand stops mounted well forward. Standard AR-15 magazines (30-round, 20-round, and others) function with this pistol. Red dots, magnified optics, and offset sights all mount via the top rail.

Q: What ships with this pistol, and what do I need to add?

A: This pistol ships with one 30-round magazine. You’ll want to consider ammunition, hearing protection, and eye protection for range use. Additionally, many shooters add a light, sling, or optic via the M-LOK and Picatinny rail space.

Q: Is this pistol legal to own without a tax stamp or ATF paperwork?

A: This is a Title I handgun with a Maxim PDW stabilizing brace. It transfers as an ordinary handgun on Form 4473 with no additional federal paperwork, registration, or tax stamp required. Check your local and state laws before purchase.

Q: What is the M-LOK handguard on this pistol?

A: Daniel Defense’s free-float M-LOK handguard lets you attach lights, lasers, and grips directly to the rail using the M-LOK slot system — no separate rail sections required. Additionally, the handguard floats independently of the barrel, so attachments don’t shift your zero. A continuous top rail provides a stable mounting surface for optics.

Q: Will I need to file ATF paperwork or pay a tax stamp for this firearm’s brace?

A: No. As configured and shipped, this is a pistol with a stabilizing brace — not a Short-Barreled Rifle (SBR). ATF’s 2023 rule treating braced pistols as SBRs was vacated by federal courts in 2024, and the government dropped its appeal in 2025. Only the standard ATF Form 4473 background check applies at transfer, the same as for any other pistol. Installing a shoulder stock would change that — it would create an SBR and require an approved ATF Form 1 first.

Additional information