02-103-15139 : DDM4ISR, Mil Spec +**NFA Product**

SKU
181356

DDM4ISR® (Mil Spec +®)

The Daniel Defense DDM4ISR is our Integrally Suppressed Weapon System optimized for the .300 Blackout cartridge. Built around a 9", Cold Hammer Forged barrel that is fluted along with a target crown and a standard pistol-length gas system, this versatile, high-performance rifle is the complete package, accurately delivering both subsonic and supersonic projectiles downrange with unrelenting reliability. Because the suppressor is an integral part of the barrel, this weapon system is ready for service right out of the box. There's no attaching a suppressor and wondering if it's mounted correctly and/or properly aligned. There's no re-zeroing for suppressed vs. unsuppressed fire.

The DDM4ISR's integral suppressor extends the barrel to an NFA-required 16 inches in length, so this platform is not classified as a Short Barreled Rifle (SBR) and therefore only requires a single tax stamp (for the suppressor). The suppressor's lightweight outer tube is constructed of durable, heat-resistant metal alloys and coated with a protective high-temperature Cerakote-C finish, which is able of withstanding extreme temperatures and harsh environments. The suppressor is also user-serviceable, so its baffle core can be easily removed for periodic cleaning in order to maintain peak performance.

The DDM4ISR comes standard with Daniel Defense's MFR XL 15.0 modular handguard, which features a continuous 1913 Picatinny rail on its top, for the mounting of iron sights or optics, and Keymod attachment points on the sides and bottom. This longer, multi-functional handguard, in conjunction with a Daniel Defense Buttstock and Pistol Grip, make the DDM4ISR as ergonomic and maneuverable as it is versatile. A resilient, attractive Mil Spec + Cerakote finish not only protects this weapon system from the elements, it also adds to its overall aesthetics-so while you're sending rounds down range; you'll also turn a few heads.

Due to governmental regulations or manufacturer preferences, some product lines or items may be not be available to export in your country.


Following a manufacturers price increase, we reserve the right to change product prices at any time without further notice.


  • Caliber: 300 BLK
  • Muzzle Thread: Permanently Attached Muzzle Device
  • Gas System: Pistol Length
  • Barrel Length: No
  • Profile: No
  • Product Weight: 7.57 lbs
  • Length: 31 ½" - 34 ¾"
  • Magazine: DD Magazine
  • Case: Daniel Defense Full-Latch Impact Plastic Case

Materials & Construction

  • UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps
  • LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point
  • UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum
  • BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:8 Twist, 9? S2W Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI Tested
  • INTEGRATED SUPPRESSOR: All Stainless Steel Construction, 17-4PH Monolithic Baffle, High-temp Cerakote-C Finish, Pinned and Welded Assembly.
  • GAS SYSTEM: Daniel Defense ISR Integrated Gas Block, Pistol Length, Direct Impingement
  • BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP tested, Chrome Lined, Properly Staked Gas Key
  • BUFFER: H Buffer
  • SIGHTS: Sold Separately
  • HANDGUARD: MFR XL 15.0
  • RECEIVER EXTENSION: 6 Position Mil-Spec 7075-T6 Aluminum
  • BUTTSTOCK: Daniel Defense Buttstock, Glass Filled Polymer with Soft Touch Overmolding
  • PISTOL GRIP: Daniel Defense Pistol Grip, Glass Filled Polymer with Soft Touch Overmolding
  • GRIP: Daniel Defense Vertical Grip, Glass Filled Polymer with Soft Touch Overmolding
  • FINISH: Mil Spec + Cerakote
  • Made in the USA!
More Information
Firearm Model / Série AR-15
Caliber/Gauge 300 AAC Blackout
Barrel Length (inch) 9
Left / Right Handed Right Handed
Manufacturer Number 02-103-15139
UPC 815604018937
Brand Daniel Defense®
More Information
Make Daniel Defense®
Model DDM4
Caliber 300 AAC
Action Semi-Auto
Barrel length 9"
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