Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Daily Deal: Brownells Acraglas 2-Gun Bedding Kit $27.99  $21.99 - Get Yours! 

MK18 STRIPPED SOCOM UPPER RECEIVER
MK18 STRIPPED SOCOM UPPER RECEIVER
MK18 Stripped SOCOM Upper Receiver
MK18 Stripped SOCOM Upper Receiver
MK18 STRIPPED SOCOM UPPER RECEIVER
MK18 STRIPPED SOCOM UPPER RECEIVER
MK18 Stripped SOCOM Upper Receiver
MK18 Stripped SOCOM Upper Receiver
BrownellExclusive BrownellExclusive
MadeInUsa OFF

DANIEL DEFENSE - MK18 Stripped SOCOM Upper Receiver

72 Reviews
MK18 Stripped SOCOM Upper Receiver
Brownells #
100018030
MFR #
BROWNELLS-MK18
UPC
$899.99
Coupon Code
Purchase Limit Help

Out of Stock

NOTIFY ME WHEN IT'S BACK IN STOCK
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

Specifications
Cartridge:
5.56x45 NATO
Barrel Contour:
Medium
Barrel Length:
10.30
Color:
Black
Finish:
Matte
Make Model Fit:
AR-15.Universal
Material:
Aluminum
Hand:
Right
Twist:
1-7
Quantity:
1
Receiver Style:
Stripped
Restriction
Threaded Barrel Restriction:
Yes
Ship to all EXCEPT:
Australia, Poland
View US State Restrictions
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

What is the DANIEL DEFENSE - MK18 Stripped SOCOM Upper Receiver?

Daniel Defense manufactures the highest quality complete AR-15 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 customers. The upper receiver is mil-spec with indexing marks and M4 feed ramps. CNC Machined of 7075-T6 aluminum, type III hard coat anodized, color is black. The barrel is chrome-moly vanadium steel, cold hammer forged in a 1:7 twist, 10.3" government profile, chrome lined. The handguard is the Daniel Defense RIS II MK18 model. It is CNC machined of 6061-T6 aluminum, and type III hard coat anodized, Flat Dark Earth. The gas system is made up of the set screw Torx low-profile gas block CNC machined from 4140 hardened steel with mil-spec heavy phosphate coating. It also features a carbine length direct impingement gas system.

These Upper Receiver Assemblies have been installed on a lower receiver & test fired. Please expect some signs of use from this testing conducted by Daniel Defense.


SPECS: Upper Receiver: CNC machined 7075-t6 Aluminum. Barrel: chrome moly vanadium steel, 1:7 twist, 10.3". Gas system: CNC machined 4140 hardened steel. Handguard: CNC machined 6061-T6 aluminum.


The handguard is Flat Dark Earth and the upper receiver is black.

See all of our AR15s and AR15 parts here.

Threaded Barrel Restriction: 
Threaded Barrels have restricted shipping to CA.

Please select a FFL Dealer
or
7 dealers near
Distance:
10miles
arrow-down
Sort by:
Nearest first
arrow-down
pin wrong
No dealers found

Please search by another zipcode to find the nearest dealer.

Close
Brownells Retail Store
Phone Call
Pin in
Clock
You must select required check box

Note:

Listed hours & fees are not guaranteed and subject to change. Please contact the dealer to confirm current hours & fees.
* Must accept required fields.
  • Pin in Brownells Featured Dealers

    Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.

  • Pin in Standard Dealers

    Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.

  • Pin in Not Available Dealers

    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

Switch view map
7 dealers near

Alternative products

Left Badge
Right Badge OFF  
5 Stars

200

300

Add on

Left Badge
Right Badge OFF  
5 Stars

200

300

MK18 STRIPPED SOCOM UPPER RECEIVER REVIEWS

4.5
72 Reviews
5 Stars
75%
4 Stars
13%
3 Stars
3%
2 Stars
4%
1 Stars
6%
Reviews Summary
The MK18 Stripped SOCOM Upper Receiver has garnered mostly positive reviews, with many praising its quality, craftsmanship, and performance. Customers highlight its fast shipping from Brownells and appreciate the option to select their own components. However, some users have reported minor imperfections and issues with the gas block and dust cover. Overall, it appears to be a reliable and well-regarded product for building personalized firearms.
What Reviewers Are Saying
Product Quality
75%
Many reviewers praise the quality and craftsmanship of the MK18 upper, noting its sturdy build and accuracy. It's commonly acknowledged as a reliable option for various applications, from personal builds to professional use. Overall satisfaction with material and functionality is high.
Shipping Experience
65%
A significant number of customers commend the fast shipping times from Brownells, often receiving their orders sooner than expected. This promptness enhances overall satisfaction with the purchase process.
Minor Imperfections
40%
While many users are thrilled with their purchase, several reviews point out minor imperfections such as nicks, dings, or inconsistencies in anodizing. Some feel these issues could be improved, especially for a product at this price point.
Customization Options
50%
Reviewers appreciate the flexibility to customize their build by selecting various components like bolt carrier groups and muzzle devices. This option is seen as a significant advantage for those looking to tailor their rifles to personal preferences.
Customer Service
55%
Many reviewers express satisfaction with Brownells' customer service, citing professionalism and efficiency in handling inquiries and order processes. Positive interactions contribute to an overall positive buying experience.
Overall Value
70%
Overall, buyers feel the MK18 upper offers great value for the price, especially when considering potential customization. It is seen as an affordable option compared to fully assembled models, making it appealing for both enthusiasts and professionals alike.
Customer Photos & Videos
5
Mk18 upper is awesome!
Thanks to brownells and their sales I can actually own a mk18 I can’t wait to set it up for home defense/carbine courses!
Would you recommend this? Yes, I would recommend to a friend
by JEFF SMITH on July 11, 2026
Verified Purchase
Was this review helpful? 0
5
Mk18
Nice upper !
by Robert Workman on June 12, 2026
Verified Purchase
Was this review helpful? 0
5
Mk18
It’s beautiful!!!
by Israel Uribe on June 04, 2026
Verified Purchase
Was this review helpful? 0
5
Worth every penny!
Got it on sale and don't regret it. Flawless out of the box. Got the stripped upper because I wanted to add a different muzzle device for a suppressor. Worked from day one.
Would you recommend this? Yes, I would recommend to a friend
by Frank E Gonzalez on April 14, 2026
Verified Purchase
Was this review helpful? 2
5
Great upper and even better price!
Love it
by Ronald Deaso on April 07, 2026
Verified Purchase
Was this review helpful? 1
View All 72 Reviews
Customer Questions
0 Questions