Daniel Defense DDM4 300S URG 300BLK 10.3" - High-Performance Tactical Upper Receiver GroupDaniel Defense$1,351.00
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Daniel Defense
The Daniel Defense DDM4 PDW in 300 Blackout is a purpose-built AR pistol engineered for shooters who need serious firepower in a compact package. With a 7-inch cold hammer-forged barrel and overall length of just 20.75 inches, this 300 BLK pistol excels at close-quarters work while remaining nimble enough for vehicle-based or home-defense scenarios. The subsonic-capable barrel, combined with a direct impingement system, runs reliably whether you're launching subsonic loads through a suppressor or pushing supersonic rounds downrange unsuppressed.
Every component is built to Daniel Defense's exacting Mil-Spec standards and manufactured in the USA. The upper and lower receivers are CNC-machined from 7075-T6 aluminum; the chrome-moly vanadium barrel is cold hammer-forged with a 1:7 twist and heavy phosphate coat; and the bolt carrier group is M16-profile with a properly staked gas key. The Maxim Defense CQB Pistol Brace provides the ergonomic adjustment needed for consistent aim, while the enhanced buffer system delivers reliable cycling in suppressed or unsuppressed fire. A linear compensator redirects muzzle blast forward, and the 5/8×24 threaded muzzle accepts a wide range of suppressors and muzzle devices.
The 6-inch MFR XL handguard features M-LOK attachment points and includes an SLR M-LOK MOD2 plain front handstop, giving you plenty of real estate for tactical accessories and a solid grip platform. The ambi GRIP-N-RIP charging handle works smoothly for both left- and right-hand shooters. It ships with a Magpul PMAG 30 AR 300 B Gen M3 magazine and a Daniel Defense full-latch impact plastic case.
Built for hunters suppressing game, home defenders who value maneuverability, and shooters who want an AR pistol with uncompromising reliability, the DDM4 PDW 300 Blackout delivers professional-grade performance in an ultra-compact platform.
| Caliber | 300 BLK |
| Barrel Length | 7 inches |
| Barrel Profile | S2W (Daniel Defense proprietary heavy barrel) |
| Barrel Twist | 1:7 |
| Overall Length | 20.75 inches (20¾–24¾ with muzzle device) |
| Gas System | Pistol length direct impingement; low-profile gas block |
| Muzzle Thread | 5/8×24 TPI |
| Muzzle Device | Daniel Defense linear compensator (17-4 PH stainless, salt bath nitride finished) |
| Mounting System | M-LOK |
| Handguard | MFR XL 6.0 M-LOK (6061-T6 aluminum, Type III hard coat anodized) |
| Upper Receiver | Mil-Spec, CNC-machined 7075-T6 aluminum with indexing marks and M4 feed ramps |
| Lower Receiver | Mil-Spec, CNC-machined 7075-T6 aluminum with enhanced flared magazine well and rear receiver QD swivel attachment point |
| Bolt Carrier Group | M16-profile Mil-Spec, MP tested, chrome-lined with properly staked gas key |
| Charging Handle | GRIP-N-RIP (ambi); 7075-T6 aluminum body, 6061-T6 aluminum handles and latch, heavy-duty stainless steel roll pins |
| Pistol Grip | Daniel Defense glass-filled polymer with soft touch overmolding |
| Brace | Maxim Defense CQB Pistol Brace |
| Buffer System | Maxim Defense enhanced buffer system |
| Weight | 5.7 lbs |
| Magazine Included | Magpul PMAG 30 AR 300 B Gen M3 |
| Case Included | Daniel Defense full-latch impact plastic case |
| Country of Origin | USA |
Yes. The barrel is threaded 5/8×24 TPI, the standard suppressor thread for 300 Blackout, and the 7-inch barrel is specifically designed to keep subsonic loads subsonic. The direct impingement system and enhanced buffer function reliably both suppressed and unsuppressed.
The DDM4 PDW ships with one Magpul PMAG 30 AR 300 B Gen M3 magazine and a Daniel Defense full-latch impact plastic case.
Yes. The 7-inch cold hammer-forged barrel delivers good ballistics for 300 Blackout and is effective with both subsonic and supersonic loads, making it suitable for suppressed hunting scenarios where the compact size is an advantage.
Yes. The GRIP-N-RIP charging handle is ambidextrous and functions smoothly for both left- and right-hand operation.
Daniel Defense
The Daniel Defense DDM4 PDW in 300 Blackout is a purpose-built AR pistol engineered for shooters who need serious firepower in a compact package. With a 7-inch cold hammer-forged barrel and overall length of just 20.75 inches, this 300 BLK pistol excels at close-quarters work while remaining nimble enough for vehicle-based or home-defense scenarios. The subsonic-capable barrel, combined with a direct impingement system, runs reliably whether you're launching subsonic loads through a suppressor or pushing supersonic rounds downrange unsuppressed.
Every component is built to Daniel Defense's exacting Mil-Spec standards and manufactured in the USA. The upper and lower receivers are CNC-machined from 7075-T6 aluminum; the chrome-moly vanadium barrel is cold hammer-forged with a 1:7 twist and heavy phosphate coat; and the bolt carrier group is M16-profile with a properly staked gas key. The Maxim Defense CQB Pistol Brace provides the ergonomic adjustment needed for consistent aim, while the enhanced buffer system delivers reliable cycling in suppressed or unsuppressed fire. A linear compensator redirects muzzle blast forward, and the 5/8×24 threaded muzzle accepts a wide range of suppressors and muzzle devices.
The 6-inch MFR XL handguard features M-LOK attachment points and includes an SLR M-LOK MOD2 plain front handstop, giving you plenty of real estate for tactical accessories and a solid grip platform. The ambi GRIP-N-RIP charging handle works smoothly for both left- and right-hand shooters. It ships with a Magpul PMAG 30 AR 300 B Gen M3 magazine and a Daniel Defense full-latch impact plastic case.
Built for hunters suppressing game, home defenders who value maneuverability, and shooters who want an AR pistol with uncompromising reliability, the DDM4 PDW 300 Blackout delivers professional-grade performance in an ultra-compact platform.
| Caliber | 300 BLK |
| Barrel Length | 7 inches |
| Barrel Profile | S2W (Daniel Defense proprietary heavy barrel) |
| Barrel Twist | 1:7 |
| Overall Length | 20.75 inches (20¾–24¾ with muzzle device) |
| Gas System | Pistol length direct impingement; low-profile gas block |
| Muzzle Thread | 5/8×24 TPI |
| Muzzle Device | Daniel Defense linear compensator (17-4 PH stainless, salt bath nitride finished) |
| Mounting System | M-LOK |
| Handguard | MFR XL 6.0 M-LOK (6061-T6 aluminum, Type III hard coat anodized) |
| Upper Receiver | Mil-Spec, CNC-machined 7075-T6 aluminum with indexing marks and M4 feed ramps |
| Lower Receiver | Mil-Spec, CNC-machined 7075-T6 aluminum with enhanced flared magazine well and rear receiver QD swivel attachment point |
| Bolt Carrier Group | M16-profile Mil-Spec, MP tested, chrome-lined with properly staked gas key |
| Charging Handle | GRIP-N-RIP (ambi); 7075-T6 aluminum body, 6061-T6 aluminum handles and latch, heavy-duty stainless steel roll pins |
| Pistol Grip | Daniel Defense glass-filled polymer with soft touch overmolding |
| Brace | Maxim Defense CQB Pistol Brace |
| Buffer System | Maxim Defense enhanced buffer system |
| Weight | 5.7 lbs |
| Magazine Included | Magpul PMAG 30 AR 300 B Gen M3 |
| Case Included | Daniel Defense full-latch impact plastic case |
| Country of Origin | USA |
Yes. The barrel is threaded 5/8×24 TPI, the standard suppressor thread for 300 Blackout, and the 7-inch barrel is specifically designed to keep subsonic loads subsonic. The direct impingement system and enhanced buffer function reliably both suppressed and unsuppressed.
The DDM4 PDW ships with one Magpul PMAG 30 AR 300 B Gen M3 magazine and a Daniel Defense full-latch impact plastic case.
Yes. The 7-inch cold hammer-forged barrel delivers good ballistics for 300 Blackout and is effective with both subsonic and supersonic loads, making it suitable for suppressed hunting scenarios where the compact size is an advantage.
Yes. The GRIP-N-RIP charging handle is ambidextrous and functions smoothly for both left- and right-hand operation.
