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Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider w/ Free S&H — 2 models

Special offer available for this product. Click here to see!
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
1 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006 
2 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006 
3 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
4 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
5 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
6 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
7 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
8 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
9 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
10 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
11 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
12 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
13 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
14 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
15 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
16 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
17 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006
18 of 18 images
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006

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Questions & Answers
Is the flash-hider pinned and welded? Expert Answer

GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Heavy Phosphate Coating, Carbine Length, Direct Impingement

by Brandon B, Gear Expert, July 28, 2021
See 2 More Answers
What length handguard is the rail? Expert Answer

The Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver features the NK18 Rail Interface System II, RIS II, which measures 9.55" in length.

by Ethan, Gear Expert, February 27, 2023
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review MK18 upper by Shane, Verified Owner, April 18, 2020
Received the upper quickly and had a great experience with Optics Planet. Would highly recommend the Daniel Defense MK18 upper and Optics Planet. I assembled the upper onto a Aero precision lower with no problems and everything functioned perfect.
17/18 found this helpful
Helpful Positive Review Duty build by David, April 23, 2020
I bought this upper for HRCC. My training and everything so far with this rifle have been flawless. Easy use for entry drills and CQB. Very accurate, even under ridiculously heavy use. Runs great with my Surefire SOCOM RC scilencer on it, spits a lit...
Read More...
7/7 found this helpful
Helpful Positive Review Top Shelf Upper by TPhips, Verified Owner, May 29, 2021
I already had a MK18 but decided to go ahead and get another upper for a future build. Like the other reviewer, it originally stated like a 8-10 month backorder but I wasn’t in a rush and figured I had time to cancel my order if I changed my mind. Th...
Read More...
2/2 found this helpful
Helpful Positive Review Top Shelf Upper - Amended by TPhips, Verified Owner, May 30, 2021
Just wanted to clarify my prior review post - while the backorder indicated 8-10 months (which I was ok with), it ended up being delivered within about a month. As I stated, I’ve been ordering a lot in the last year plus (check my account OpticsPlane...
Read More...
1/1 found this helpful
Helpful Positive Review Such an amazing upper! by Mo Guns, Verified Owner, May 12, 2021
My favorite upper by far now. Shoots so well. The rail really looks fantastic and you can just feel the quality of Daniel Defense when you take it out of the box. I think buying these uppers is the best way to do a daniel defense rifle, buy the upper...
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1/1 found this helpful
Helpful Positive Review Totally Worth It by Honeybadger, Verified Owner, May 3, 2021
This upper is on the pricer end but is totally worth it! Had been looking at a MK18 upper and pulled the trigger...and Optics Planet delivered big time. When I placed my order the expected wait time (backorder) was 8-10 months. Optics Planet had it a...
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Read All 19 Reviews

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Product Info for Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider

Daniel Defense manufactures the highest quality complete AR15 upper receivers on the market today! Every Daniel Defense upper is painstakingly hand assembled, quality assurance tested, and test fired to ensure that the highest quality product makes it to the hands of our customers. The Daniel Defense M4 URG, MK18 comes complete with bolt carrier group and charging handle, 10.3? Cold Hammer Forged Barrel, RIS II MK18 Rail System in Black or Flat Dark Earth, and Daniel Defense low profile gas block.MK18, URG, 10.3" 5.56, 1:7 Twist, GOV, LPG, RIS II Rail, DDFS-Black.image

Upper receiver is Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized. Barrel is Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 twist, 10.3? Government Profile, Chrome Lined, MP tested, and Mil-Spec Heavy Phosphate Coated. Gas System is Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Heavy Phosphate Coating, Carbine Length, Direct Impingement. Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished. BCG M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key. Handguard is Daniel Defense RIS II MK18, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized. Daniel Defense Rail Panels made from Santoprene, heat resistant to 300° F.

Specifications for Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider:

Manufacturer: Daniel Defense
Cartridge: 5.56x45mm NATO
Barrel Length: 10.3 in
Barrel Twist Rate: 1-7
Finish: Type III Hard Coat Anodized
Gun Model: AR-15
Condition: New
Gun Rail: RIS II Rail
Additional Features: w/ Flash Hider
Weight: 3.8 lb

Features:

  • 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, 1:7 Twist, 10.3" Government Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI Tested
  • GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Heavy Phosphate Coating, Carbine 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
  • SIGHTS: Sold Separately
  • HANDGUARD: Daniel Defense RIS II MK18, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized
  • CHARGING HANDLE: GRIP-N-RIP Charging Handle, Body CNC Machined of 7076-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
  • RAIL PANELS: Daniel Defense Rail Panels Made from Santoprene, Heat Resistant to 300 degrees F.

Package Contents:

  • Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider

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Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider Orderable Models

List of Orderable Models

Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 , MPN: 23-004-08013-012 , UPC: 852548002592 , Code: DDD-UFH-MK18R-230040801301
Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Black, 10.3in, 23-004-08013-006 , MPN: 23-004-08013-006 , UPC: 815604014045 , Code: DDD-UFH-MK18R-23-004-08013-006

Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

DEMO, Daniel Defense MK18, URG, 5.56, 1/7, GOV, LPG, RIS II Rail, DDFS Complete Upper Receiver w/ Flash Hider, Flat Dark Earth, 10.3in, 23-004-08013-011 , MPN: 23-004-08013-012-DEMO , Code: DDD-UFH-MK18R-230040801301-DEMO
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