+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Reviews & Ratings for Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider — 34 reviews

(34 reviews)
Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider
Daniel Defense MK18, URG, 10.3in 5.56 Complete Upper Receiver w/ Flash Hider
$1,517.00 $1,412.00 Save $105.00
View Product
Write a Review
Compare (0)
1 item has been added
Add at least two items to compare
Most Helpful Positive Review MK18 upper
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.
Most Helpful Negative Review It’s alright
Overall I do like the upper but when you pay $1200 for an upper I expect more than a plastic ejection port cover and a unusable charging handle, it’d cost them less than $5 to put a quality cover on there and that charging handle is absolutely terrible. You have to put a finger on either side and pu...
Read More...
Show
Sort by
Filter by

mk18 urg Daniel defense

by cj, Verified Owner from AL, United States Written on May 30, 2025
This is one of the best urg you could ever own and i will be buying more guaranteed.
Would recommend: Yes
Was it helpful to you? Yes | No
Share

Mk18 urg upper

by Chris, Verified Owner from AL, United States Written on May 22, 2025
Beautiful no complaints � one of the best uppers you could ever wish for and will be buying more in the future.
Would recommend: Yes
Was it helpful to you? Yes | No
Share

Can’t get much better

by JMatt, Verified Owner from KY, United States Written on May 4, 2025
If you’re wanting a rifle that will make you feel legit when you go to the range it doesn’t get much better than this! Mk18s are respected by everyone and have been proven for years by our armed forces. Spend the little bit of extra money and buy one of these. Also I’ve only had it for a short time, but I have had zero malfunctions or QC issues the gun is surprisingly accurate for how short the barrel is. I would absolutely recommend
Would recommend: Yes
Was it helpful to you? Yes | No
Share

Nothing better on the market

by Steven Wilcoxson, Verified Owner from AE, United States Written on April 19, 2025
It fit perfectly with a DDM4 lower and came in the mail 2 days later, only wish it came with some iron sights but regardless was perfect.
Best Used for:
  • SBR
Would recommend: Yes
Was it helpful to you? Yes | No
Share

Amazing machining work

by T, Verified Owner from AZ, United States Written on April 19, 2025
I haven't shot the upper yet but the fit and finish is great!
Would recommend: Yes
Was it helpful to you? Yes | No
Share

durableeeee

by matt, Verified Owner from MS, United States Written on March 12, 2025
The upper is made to run into the ground so do that
Would recommend: Yes
Was it helpful to you? Yes | No
Share

good looking nice quality

by Arturo Arroyo, Verified Owner from TX, United States Written on February 14, 2025
Well its one of the best high quality products and amazing details in every piece you payed highly recommend
Best Used for:
  • Sport and recreational shooting, backup laser
Would recommend: Yes
Was it helpful to you? Yes | No
Share

DD Mk18 10, 3 “

by Carolina ripper, Verified Owner from NC, United States Written on February 9, 2025
One of the best upperers I have ever had!!! Materials, and the build quality is top tear!!!
Would recommend: Yes
Was it helpful to you? Yes | No
Share

DD MK18 upper

by Keith, Verified Owner from TN, United States Written on October 19, 2024
Optics planets price on the upper made it more economical for me to put a complete my-8 together.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
Share

Awesome Upper

by DerekFTW, Verified Owner from TX, United States Written on October 6, 2024
Daniel Defense is known for quality and this MK18 is no exception. Fit perfectly on an Aero Precision lower and works like a champ. Easy purchase and super fast shipping by OpticsPlanet, had it to the door in a week!
Would recommend: Yes
Was it helpful to you? Yes | No
Share
There are no reviews that match your criteria. Would you like to review this product?