MK12 5.56X45 NATO SEMI-AUTO RIFLE – MK12 5.56X45 NATO 18” BBL (1)32RD MAG BLACK

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The MK12 AR15 style firearm is the evolution of the special purpose rifle. It's constructed around an 18-inch Stainless Steel barrel with a chamber created during the Cold Hammer Forging process, which ensures the most precise alignment of the chamber to the bore possible. This, along with being DLC finished, equates to unprecedented accuracy and durability. The MK12 barrel is engineered with a rifle-length direct impingement gas system and utilizes the MK12 gas block, which is built to Crane (Naval Surface Warfare Division) Specifications for USSOCOM. The upper receiver is equipped with a 12 inch free floating picatinny quad rail for your choice of optics and accessories, independently ambi GRIP-N-RIP Charging Handle that accommodates left- and right-handed shooters, and is finished off with a Daniel Defense Improved Flash Suppressor. This precision rifle is equipped with the Geissele SSA 2-Stage Trigger to give the marksman an advantage for precise fire to the target.

FEATURES:

  • 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: Proprietary Blend of Stainless Steel, Cold Hammer Forged, 1:7 Twist, 18" MK12 Profile, DLC Finished, and HP/MPI Tested
  • GAS SYSTEM: MK12 Low Profile Gas Block CNC Machined of hardened 416 Stainless Steel with Black Oxide Coating, Rifle-Length, Direct Impingement
  • MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished
  • BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key
  • BUFFER: H Buffer
  • SIGHTS: Sold Separately
  • HANDGUARD: Daniel Defense DDM4 Rail 12.0, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized
  • CHARGING HANDLE: GRIP-N-RIP Charging Handle, Body CNC Machined of 7075-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
  • 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
  • RAIL PANELS: Daniel Defense Rail Panels made from Santoprene, heat resistant to 300° F.
  • Made in the USA!

SPECIFICATIONS:

  • Mounting System – Picatinny
  • Caliber – 5.56mm NATO
  • Muzzle Thread – 1 ⁄ 2 × 28 TPI (Threads Per Inch)
  • Gas System – Rifle
  • Barrel Length – 18"
  • Barrel Profile – MK12
  • Product Weight – 7.41 lbs
  • Length – 34 3/4" – 37 7/8”
  • Magazine – DD Magazine with 32-round capacity in the same size magazine as industry-standard 30-round magazines
  • Case – Daniel Defense Full-Latch Impact Plastic Case
Description

Original price was: $2,657.00.Current price is: $2,228.00.

The MK12 AR15 style firearm is the evolution of the special purpose rifle. It's constructed around an 18-inch Stainless Steel barrel with a chamber created during the Cold Hammer Forging process, which ensures the most precise alignment of the chamber to the bore possible. This, along with being DLC finished, equates to unprecedented accuracy and durability. The MK12 barrel is engineered with a rifle-length direct impingement gas system and utilizes the MK12 gas block, which is built to Crane (Naval Surface Warfare Division) Specifications for USSOCOM. The upper receiver is equipped with a 12 inch free floating picatinny quad rail for your choice of optics and accessories, independently ambi GRIP-N-RIP Charging Handle that accommodates left- and right-handed shooters, and is finished off with a Daniel Defense Improved Flash Suppressor. This precision rifle is equipped with the Geissele SSA 2-Stage Trigger to give the marksman an advantage for precise fire to the target.

FEATURES:

  • 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: Proprietary Blend of Stainless Steel, Cold Hammer Forged, 1:7 Twist, 18" MK12 Profile, DLC Finished, and HP/MPI Tested
  • GAS SYSTEM: MK12 Low Profile Gas Block CNC Machined of hardened 416 Stainless Steel with Black Oxide Coating, Rifle-Length, Direct Impingement
  • MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished
  • BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key
  • BUFFER: H Buffer
  • SIGHTS: Sold Separately
  • HANDGUARD: Daniel Defense DDM4 Rail 12.0, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized
  • CHARGING HANDLE: GRIP-N-RIP Charging Handle, Body CNC Machined of 7075-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
  • 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
  • RAIL PANELS: Daniel Defense Rail Panels made from Santoprene, heat resistant to 300° F.
  • Made in the USA!

SPECIFICATIONS:

  • Mounting System – Picatinny
  • Caliber – 5.56mm NATO
  • Muzzle Thread – 1 ⁄ 2 × 28 TPI (Threads Per Inch)
  • Gas System – Rifle
  • Barrel Length – 18"
  • Barrel Profile – MK12
  • Product Weight – 7.41 lbs
  • Length – 34 3/4" – 37 7/8”
  • Magazine – DD Magazine with 32-round capacity in the same size magazine as industry-standard 30-round magazines
  • Case – Daniel Defense Full-Latch Impact Plastic Case

Out of stock

SKU 430107855 Category

Description

The MK12 AR15 style firearm is the evolution of the special purpose rifle. It's constructed around an 18-inch Stainless Steel barrel with a chamber created during the Cold Hammer Forging process, which ensures the most precise alignment of the chamber to the bore possible. This, along with being DLC finished, equates to unprecedented accuracy and durability. The MK12 barrel is engineered with a rifle-length direct impingement gas system and utilizes the MK12 gas block, which is built to Crane (Naval Surface Warfare Division) Specifications for USSOCOM. The upper receiver is equipped with a 12 inch free floating picatinny quad rail for your choice of optics and accessories, independently ambi GRIP-N-RIP Charging Handle that accommodates left- and right-handed shooters, and is finished off with a Daniel Defense Improved Flash Suppressor. This precision rifle is equipped with the Geissele SSA 2-Stage Trigger to give the marksman an advantage for precise fire to the target.

FEATURES:

  • 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: Proprietary Blend of Stainless Steel, Cold Hammer Forged, 1:7 Twist, 18" MK12 Profile, DLC Finished, and HP/MPI Tested
  • GAS SYSTEM: MK12 Low Profile Gas Block CNC Machined of hardened 416 Stainless Steel with Black Oxide Coating, Rifle-Length, Direct Impingement
  • MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished
  • BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key
  • BUFFER: H Buffer
  • SIGHTS: Sold Separately
  • HANDGUARD: Daniel Defense DDM4 Rail 12.0, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized
  • CHARGING HANDLE: GRIP-N-RIP Charging Handle, Body CNC Machined of 7075-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
  • 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
  • RAIL PANELS: Daniel Defense Rail Panels made from Santoprene, heat resistant to 300° F.
  • Made in the USA!

SPECIFICATIONS:

  • Mounting System – Picatinny
  • Caliber – 5.56mm NATO
  • Muzzle Thread – 1 ⁄ 2 × 28 TPI (Threads Per Inch)
  • Gas System – Rifle
  • Barrel Length – 18"
  • Barrel Profile – MK12
  • Product Weight – 7.41 lbs
  • Length – 34 3/4" – 37 7/8”
  • Magazine – DD Magazine with 32-round capacity in the same size magazine as industry-standard 30-round magazines
  • Case – Daniel Defense Full-Latch Impact Plastic Case

Additional information

Weight 13.88 lbs
Barrel Length

18''

Rear Sight

None

Magazine Type

Removable

Weight

7.41 lbs

Stock Material

Polymer

Magazine Included

1 x 32-Round

Finish

Black

Make/Model

Daniel Defense, DDM4 MK12

Cartridge

AKK_5.56 x 45

Front Sight

None

Muzzle

Flash Hider

Action Type

Semi-Auto

Length

34.75''

Make

Daniel Defense

Model

DDM4 MK12

Capacity

32+1-Round

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.