Daniel Defense DDM4 PDW, 300 Blackout, 7″ Cold Hammer Forged Barrel, Black Finish, 30Rd

Product Description

The Daniel Defense DDM4 PDW in .300 Blackout is purpose-built for operators who need maximum maneuverability in confined spaces. This short-barreled rifle collapses to roughly 20.75 inches overall. It delivers proven Daniel Defense reliability in a Personal Defense Weapon platform.

The 7-inch cold hammer forged barrel pairs with the Maxim Defense CQB Gen 7 stock. This stock’s enhanced buffer system ensures reliable cycling both suppressed and unsuppressed. Every Daniel Defense firearm is hand assembled, quality assurance tested, and test fired before shipping.

Additionally, the .300 Blackout cartridge excels in ultra-short barrel applications. The 5/8×24 threaded muzzle accepts suppressors for tactical flexibility. At approximately 5.7 pounds, this PDW stays lightweight without sacrificing Daniel Defense’s legendary durability.

Compact Performance for Close-Quarters Work

This configuration targets vehicle operations, close-quarters defense, and tactical situations. The short profile and light weight make shoulder transitions fast and intuitive. The .300 Blackout’s subsonic capability enhances its appeal for sound-suppressed deployments.

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: 7″ Cold Hammer Forged Chrome Moly Vanadium Steel, 1:7″ Twist, Chrome Lined, S2W (Strength-to-Weight) Profile, HP/MPI Tested, 5/8×24 Threaded Muzzle
• Gas System: Pistol-Length Direct Impingement Gas System with Low-Profile Gas Block
• Muzzle Device: Daniel Defense Linear Compensator, 5/8×24 Thread Pitch (Suppressor-Ready)
• Handguard: Daniel Defense MFR XL 6.0 M-LOK Flat Front Rail, Free-Float, M-LOK Attachment Points, Continuous Top 1913 Picatinny Rail, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized, SLR M-LOK MOD2 Plain Front Handstop Installed
• Bolt Carrier Group: Daniel Defense Bolt Carrier Group, Mil-Spec MP Tested, HPT — 300 Blackout Compatible
• Charging Handle: Daniel Defense GRIP-N-RIP Ambidextrous Charging Handle
• Trigger: Daniel Defense Mil-Spec Single-Stage Trigger
• Buffer: Maxim Defense CQB Gen 7 Integrated Buffer System (functions reliably suppressed or unsuppressed)
• Receiver Extension: Maxim Defense CQB Gen 7 Receiver Extension with Enhanced Buffer System
• Buttstock: Maxim Defense CQB Gen 7 Telescoping Stock, Multi-Position Adjustable
• Pistol Grip: Daniel Defense Mil-Spec A2 Pistol Grip

Specifications

This rifle is configured with a barrel under 16 inches and a fixed shoulder stock, which makes it a Short-Barreled Rifle (SBR) under the National Firearms Act (NFA) — a Title II firearm. As of January 1, 2026, the federal making/transfer tax on SBRs was reduced to $0 under the One Big Beautiful Bill Act — but the item remains fully regulated. Before taking possession, the buyer (or their trust/entity) must still have an approved ATF Form 1 (if building/registering) or Form 4 (if transferring an already-registered SBR) on file, along with fingerprints, photos, and a completed NFA background check (no tax payment is due). Current eForm approval times have been running about two weeks or less, though times vary — see our NFA wait times guide for current figures. The rifle must be transferred through Western Sport’s SOT/Class 3 process to a licensed dealer in the buyer’s state, and some states restrict or prohibit SBR ownership outright. 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 combines local expertise with deep knowledge of Daniel Defense rifle platforms and configurations.
• Our knowledgeable staff provides personalized guidance on SBR builds, ammunition selection, and suppressor compatibility.
• Competitive pricing on this DDM4 PDW ensures you get premium quality without premium markup.
• We stand behind every Daniel Defense rifle we sell with responsive after-sale support and technical assistance.
• Fast, reliable shipping and hassle-free returns give you confidence in your purchase decision.

Frequently Asked Questions

Q: What ammunition works best in the DDM4 PDW .300 Blackout?

A: Subsonic .300 Blackout loads pair perfectly with suppressors and keep velocities low. Supersonic rounds work equally well unsuppressed. Both cycle reliably through the Maxim CQB stock’s enhanced buffer system.

Q: What optics, lights, and accessories mount to this rifle?

A: The top rail accepts any Picatinny-compatible red dot, scope, or backup sight. The handguard supports M-LOK accessories for tactical lights, grips, and rail sections. Standard mil-spec slings and Daniel Defense magazines (30-round included) integrate seamlessly.

Q: Can I add a suppressor to the DDM4 PDW?

A: Yes. The 5/8×24 threaded muzzle is ready for any suppressor with that pitch. The Maxim CQB stock’s buffer system maintains reliability both suppressed and unsuppressed for true versatility.

Q: What comes with this rifle, and what’s Western Sport’s shipping policy?

A: The DDM4 PDW ships with one 30-round magazine, cleaning kit, and documentation. We handle all shipping logistics and comply with federal firearms requirements. Contact us for current lead times and delivery options.

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

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: Do I need to file ATF paperwork or pay a tax stamp for this rifle?

A: Yes. This rifle’s barrel is under 16 inches with a shoulder stock attached, which makes it a Short-Barreled Rifle (SBR) under the NFA. As of January 1, 2026, the federal making/transfer tax on SBRs dropped to $0, so you’ll need an approved ATF Form 1 or Form 4 and a completed background check before taking possession, but no tax payment is due. The rifle must transfer through a licensed Class 3/SOT dealer.

Additional information