This is a civilian legal Integrally Suppressed rifle and is not classified as an SBR.  It is a one stamp gun because the suppressor is permanently attached.

The Daniel Defense DDM4ISR (Integrally Suppressed Rifle) 300 takes advantage of the best characteristics of the 300BLK by integrating key components into one package, eliminating the need for two separate tax stamps.  While the rifle utilizes a 10.3” barrel, it is not classified as an SBR (Short-Barreled Rifle) because the suppressor is permanently attached.  The DDM4ISR 300’s sound suppressor is threaded and welded to the proprietary ISR Integrated Gas Block, bringing the barrel length to 16.145”.  While the rifle is at the 16” legal limit, the ISR’s integrated suppressor will require an NFA tax stamp.   This rifle also comes with the newly designed, rugged and comfortable Daniel Defense Buttstock and Pistol Grip.  Using the tool provided, the ISR’s baffle core is removable for cleaning.  With the inclusion of the Daniel Defense Modular Float Rail (MFR) 12.0, it provides the shooter with the ultimate in modular adaptability.  This rifle can be run “slick” with an uninterrupted top rail that runs the length of the tube.  In addition, the 3” Modular Picatinny Rail sections allow the end user to customize the rail set up.

See the detailed description below for technical information about the DDM4 ISR.

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You're reviewing:Daniel Defense M4 Carbine ISR-300 Blackout
More Information
Price $2,695.00
Caliber 300BLK
Weight 7.560000
Length 31.5-34.75
Decibel Reduction / Output Not Provided
Full Auto Rated No
Thread Pitch Multiple Thread Pitchs Available
Color Black
Can Be Disassembled No
Manufacturer Daniel Defense
Minimum Advertised Price 3,199.00
Apply Partial Payment No
Allow Flexy / Layaway Payments? No
Allow Full Payment? No
Down Payment 0.000000

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  • LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized
  • UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized
  • BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:8, 10.3″ S2W® Profile, Salt Bath Nitride Finished, and HP/MPI tested
  • GAS SYSTEM: ISR Integrated Gas Block, Pistol Length, Direct Impingement
  • INTEGRATED SUPPRESSOR: All Stainless Steel Construction, 17-4 PH Monolithic Baffle, Salt Bath Nitride Finish, Pinned and Welded Assembly
  • BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key
  • BUFFER: H Buffer
  • SIGHTS: Sold Separately
  • HANDGUARD: Daniel Defense Modular Float Rail™ 12.0, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized, with three 3” Modular Picatinny Rail Sections
  • 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
  • Made in the USA!
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