Daniel Defense 02-088-04228-047 DDM4 PDW .300 Blackout 7" SBR, Cobalt

Daniel Defense DDM4 PDW .300 Blackout 7" SBR, Cobalt

The Daniel Defense DDM4 PDW SBR is a compact .300 Blackout rifle built around a 7" cold hammer-forged barrel and the company's short MFR XL 6.0 handguard. This 02-088-04228-047 configuration uses a Cobalt finish and a Maxim Defense CQB Gen 7 stock, creating a short overall package intended for users who want the handling advantages of a PDW-sized AR while retaining a conventional shoulder stock.

The defining feature of the DDM4 PDW is the way Daniel Defense pairs the 7" .300 Blackout barrel with a compact stock and enhanced buffer system. The result is an approximately 21" rifle with the stock collapsed, while the .300 Blackout chambering allows the platform to use both subsonic and supersonic ammunition in a barrel length specifically chosen for this compact configuration.

Key Features

• DDM4 PDW short-barreled rifle
• Chambered in .300 Blackout
• 7" cold hammer-forged S2W-profile barrel
• 1:7" twist rate
• 5/8"-24 threaded muzzle
• Daniel Defense linear compensator
• MFR XL 6.0 free-float handguard
• M-LOK accessory mounting
• Maxim Defense CQB Gen 7 stock
• Maxim Defense enhanced buffer system
• GRIP-N-RIP ambidextrous charging handle
• Daniel Defense pistol grip
• Flared magazine well
• Rear receiver QD sling attachment point
• Cobalt finish
• 30-round capacity configuration

7" .300 Blackout Barrel

The DDM4 PDW uses a 7" S2W-profile barrel manufactured from chrome-moly-vanadium steel and cold hammer forged by Daniel Defense. The barrel uses a 1:7" twist rate and is chambered in .300 Blackout, a cartridge commonly selected for compact AR platforms because it is available in both supersonic and subsonic loadings.

Daniel Defense specifically developed the PDW around this short barrel length. The compact barrel helps keep the overall package short while still providing a platform suited to the ballistic characteristics of .300 Blackout.

Threaded Muzzle and Linear Compensator

The muzzle is threaded 5/8"-24 and fitted with a Daniel Defense linear compensator. The compensator is designed to direct muzzle blast forward, away from the shooter, which is especially relevant on a firearm with a 7" barrel.

The standard thread pattern also allows compatible muzzle devices to be installed where appropriate. Buyers should confirm compatibility and all applicable legal requirements before changing the factory muzzle device.

Maxim Defense CQB Gen 7 Stock

The DDM4 PDW SBR uses a Maxim Defense CQB Gen 7 stock rather than a conventional full-length AR carbine stock. The compact stock assembly reduces the rearward footprint of the rifle and works with the Maxim Defense enhanced buffer system.

Daniel Defense designed the PDW around this buffer and stock configuration for operation in both suppressed and unsuppressed setups.

MFR XL 6.0 Handguard

The MFR XL 6.0 handguard provides a short free-float rail system proportioned to the 7" barrel. M-LOK slots provide direct mounting points for compatible lights, sling hardware, hand stops, and other accessories, while the upper rail provides space for optics and other Picatinny-mounted equipment.

The compact rail keeps accessory mounting space available without adding unnecessary length to the front of the rifle.

Ambidextrous Charging Handle

The GRIP-N-RIP charging handle is independently ambidextrous, allowing the rifle to be charged from either side. This gives both right- and left-handed shooters direct access to the charging handle and also provides additional flexibility when operating around mounted optics or other equipment.

Product Specifications

• Manufacturer: Daniel Defense
• Model: DDM4 PDW SBR
• Manufacturer Part Number: 02-088-04228-047
• UPC: 818773022446
• Type: Short-Barreled Rifle
• Action: Semi-Automatic
• Caliber: .300 Blackout
• Barrel Length: 7"
• Barrel Profile: S2W
• Barrel Material: Chrome-Moly-Vanadium Steel
• Barrel Manufacture: Cold Hammer Forged
• Twist Rate: 1:7"
• Muzzle Thread: 5/8"-24
• Muzzle Device: Daniel Defense Linear Compensator
• Handguard: MFR XL 6.0
• Accessory Interface: M-LOK / Picatinny
• Stock: Maxim Defense CQB Gen 7
• Buffer System: Maxim Defense Enhanced Buffer System
• Charging Handle: GRIP-N-RIP Ambidextrous
• Grip: Daniel Defense
• Capacity: 30 Rounds
• Overall Length: Approximately 21"
• Weight: Approximately 5.7 lb
• Color: Cobalt

Compact PDW Configuration

The DDM4 PDW is not simply a standard AR rifle with a shorter barrel. Daniel Defense configured the barrel, handguard, muzzle device, stock, and buffer system together around a compact .300 Blackout platform. The 7" barrel and CQB stock reduce overall size, while the MFR XL handguard, ambidextrous charging handle, and threaded muzzle retain the modularity expected from the DDM4 family.

Important NFA Notice

This firearm is configured as a short-barreled rifle. Federal, state, and local laws may regulate the purchase, transfer, possession, and configuration of SBRs. Buyers are responsible for complying with all applicable requirements before taking possession.

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. You must be 18 or older to shop or purchase on our website, and 21 or older to purchase ammunition or firearms. Check local laws before ordering. By ordering, you certify that you meet all federal, state, and local legal requirements. There are no returns or exchanges on armor, firearms, ammunition, or PPE. Ammunition ships UPS Ground to the lower 48 states.
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