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18" .308 AR-10 DPMS GEN1 BARRELED UPPER - MAS DEFENSE NERO 15" M-LOK RAIL - MID-LENGTH GAS
18" .308 AR-10 DPMS GEN1 BARRELED UPPER - MAS DEFENSE NERO 15" M-LOK RAIL - MID-LENGTH GAS
 
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MSRP: $555.00
Our Price: $479.99
SALE PRICE: $339.99

Price with Selected Options: $339.99

Stock Status: In Stock


Product Code: MAS-183W3-MDNM-15

Upper Receiver Options:


AR-10 Ejection Door Options:


Barrel Options:


Handguard Options:


Gas Block Options:


Gas Tube Options:


Muzzle Device Options:


***ON SALE - Choose a Bolt Carrier Group:


***ON SALE - Choose a Charging Handle:



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DESCRIPTION
 
18" .308 AR-10 DPMS GEN1 BARRELED UPPER - MAS DEFENSE NERO 15" M-LOK RAIL - MID-LENGTH GAS

The options listed below come standard with this barreled upper. The drop down options listed above allow you to customize your build. You can leave them as is, change one option or change them all! We let you build your upper the way you want it built!

1. Upper Receiver - MAS Defense AR-10 DPMS GEN 1 Complete Upper Receiver

2. Barrel - 18" .308 AR-10 Government Mid-Length Barrel - Click on the drop down to choose and see specs.

3. Handguard - MAS Defense Black 15" Nero M-LOK Free Float Rail - Click on the drop down box above to choose from our selection.

4. Gas Block - .750 Low Profile Steel Melonite Nitride Treated Gas Block

5. Gas Tube - Mid-Length Stainless Steel Gas Tube

6. Muzzle Device - A2 Flash Hider

Bolt Carrier Groups and Charging Handles are sold separately. All barreled uppers are head spaced and test fired to ensure function.

ALL LAWS APPLY. IT IS THE RESPONSIBILITY OF THE BUYER TO UNDERSTAND ALL LAWS REGARDING PURCHASE AND OWNERSHIP OF THIS UPPER. WE STRONGLY URGE YOU TO CONTACT YOUR LOCAL FFL AND/OR THE ATF WITH ANY AND ALL QUESTIONS TO MAKE SURE YOU UNDERSTAND THE LAW BEFORE PURCHASING THIS ITEM.

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Average Rating: Average Rating: 4.5 of 5 4.5 of 5 Total Reviews: 3 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Perfection! December 29, 2025
: Zac Dyer from Clovis, CA United States  
I was looking to complete my build and came across this perfect piece. Thanks MAS Defense for making the rest of my build super easy.

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  0 of 0 people found the following review helpful:
 
4 of 5 AR10 upper March 26, 2020
: Casey Anderson from Live oak, TX United States  
The upper looks great, yet to fire. As of now the bcg fits a little too snug, but maybe some rounds down range will loosen it up

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  0 of 0 people found the following review helpful:
 
4 of 5 18" AR-10 .308 BARRELED UPPER May 14, 2019
: Tyler Miller from Round Rock, TX United States  
I haven't had a chance to put any rounds through it.  Though just looking at it, I'm please with the build quality.  Fit and finish look pretty good.   I really wanted a 6.5 Creedmoor build, but you really couldn't beat the price of this upper in .308.  Can't wait to see how that Ballistic Advantage barrel holds up.

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16" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE SQUADRON 12" LIGHTWEIGHT QUAD RAIL - MID-LENGTH GAS
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