Details
The MK18 AR15 style Upper Receiver Group is unmatched in size, weight, and performance, and features the picatinny quad rail Daniel Defense provides to USSOCOM. The RIS II rail features a Bolt-Up System that has been rigorously tested prior to fielding by USSOCOM. The 10.3 inch Cold Hammer Forged barrel is the same length in use for the MK18 upper most commonly used for CQB operations. Its independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters. All Daniel Defense complete upper receiver groups come standard with an M16 profile bolt carrier group.
NFA DISCLAIMER
Once this part is assembled into a complete firearm, it becomes a regulated item by the National Firearms Act (NFA). Please check with your local and state municipalities for any further regulatory requirements. It is the buyer's responsibility to make sure they comply with all NFA rules and applicable laws.
MATERIALS & CONSTRUCTION
- 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° F.
- Made in the USA!
Specifications
| Mounting System | Picatinny |
|---|---|
| Caliber | 5.56mm NATO |
| Material | Chrome Moly Vanadium |
| Manuf. Process | Cold Hammer Forged |
| Twist Rate | 1:7 |
| Gas System | Carbine |
| Barrel Length | 10.3" |
| Barrel Profile | Government |
| Product Weight | 3.5 lbs |
| Manufacturer | Daniel Defense |
Guaranteed Satisfaction
All Daniel Defense products carry a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer's products.
- BEST MK18 UPPERBest MK18 I have ever used. Decades of law enforcement experience with years on special teams. Won't be my last.
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- BestBest MK18 RIII UPPER EVER!!!
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- Best upper on the marketUsed it on the teams and will use it in civilian life.
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- FlawlessM18 upper is built like a tank perfect fit and finish
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- It's exactly what you expectShipped fast, looks great, shoots better.
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- Great but has some very minor blemishesThe title says it all, personally don’t care as I’m bound to ruin it myself anyway. Buuut it does have minor blemishes and imperfections. I’m sure I could get it replaced but it isn’t worth the time. It was a gift from my brother/wife so I don’t want to ask them to deal with warranty etc. just kinda sucks to hear the hype of Daniel Defense and get something less than optimal. My Aero was a blem and I couldn’t even find it… so that gives you an idea.
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- Awesome Upper for an SBRI have had my MK18 upper for 6 years now. I will just say it up front, you get what you pay for. I absolutely love the design of the RIS II rail and the overall quality of the upper. The one thing I didn't realize was how heavy an SBR can be after you add all your stuff to it. I am running an AAC 5.56 suppressor, a Surefire Scout Pro, and an Acog (8.7lbs without magazine). I was running a Trijicon MRO but switched to the Acog. I know an Acog isn't meant for an SBR but with how my eyes are these days, it works great for me and I feel I am more effective at longer ranges with my MK18. I have been working on cutting weight on my SBR wherever I can. After changing out some of the parts with some light weight options, I am down to 8.3lbs with the suppressor, light, and Acog installed. I think I am going to look at a titanium BCG next. For those looking at getting a MK18/SBR, make sure you really pay attention to the gas system and parts you use for it. These things are a lot different than a 14.5 or 16inch AR. Also, when you go with an SBR and a suppressor, you will really see how hot your gun will get after a short time of use and also how much carbon your gun will build up. All in all, I love my MK18 and have had a lot of fun shooting it.
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- Tier 1 RifleExtremely reliable rifle and excellent while running CQB. Never had a malfunction while putting that rifle through extreme conditions. This is definitely a top quality product.
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- OverallHighly recommend this upper. I’ve used many different manufactures and DD surpasses them all.
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- Happy CustomerJust bought the MK18 complete upper for my latest build and could not be happier. Great aesthetics! Extremely comfortable to shoot and handle. Has a great feel to it. No misfeeds. This is my first DD purchase and extremely happy!
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