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6" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 7.25" M-LOK RAIL
6" 300 BLACKOUT BARRELED UPPER - MAS NERO 7.25" M-LOK RAIL
 
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MSRP: $427.00
Our Price: $364.99
SALE PRICE: $279.99

Price with Selected Options: $279.99

Stock Status: In Stock


Product Code: MAS-063B1-MDNM-07

Upper Receiver 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
 
6" 300 BLACKOUT BARRELED UPPER - MAS NERO 7.25" M-LOK RAIL

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 - 7075 T6 Aluminum A4. Precision Machined to Mil-Spec Tolerances. Black Hardcoat Anodized Mil-Std-171 Type III. M4 Ramps, Forward Assist, Ejection Door.

2. Barrel - 6" 300 AAC Blackout 1x8 4150 CrMoV Melonite Nitride Treated Steel

3. Handguard - MAS Defense "NERO" 7.25" Slimline M-LOK Free Floating Handguard - (ID 1.25"). Click "Handguard Options" above for FDE.

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

5. Gas Tube - Pistol Length Stainless Steel Gas Tube

6. Muzzle Device - Flash Can Slim

Bolt Carrier Groups and Charging Handles can be added at a discounted price by selecting the applicable drop down box above. 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.

***80% LOWERS CANNOT BE PURCHASED WITH BARRELED UPPERS OR BUILD KITS. ORDERS THAT INCLUDE THEM WILL BE CANCELLED AND CHARGED A 15% CANCELLATION FEE***.

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

  0 of 0 people found the following review helpful:
 
5 of 5 Looks good March 10, 2023
: Adam Ochoa from Fresno, CA United States  
Product looks as advertised. Haven't had a chance to shoot it yet but looking forward to it

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  0 of 0 people found the following review helpful:
 
5 of 5 Wanted the shortest configuration possible February 18, 2023
: Kory Richards from Bethel , VT United States  
Found it in the 6” 300 BO AR-15 barreled upper Mas Defense Nero!!
Perfect match with a Can!

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  0 of 0 people found the following review helpful:
 
5 of 5 Looks good September 20, 2021
: from Ohio  
Haven't shot yet but looks like a well put together upper for a good price with quick shipping, thanks!

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  0 of 0 people found the following review helpful:
 
5 of 5 Looker March 4, 2021
: Jorge Perez from Corpus Christi, TX United States  
Love this upper...makes the gun look mean.

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  0 of 0 people found the following review helpful:
 
5 of 5 6” 300 blk upper February 10, 2021
: from Roanoke, VA United States  
Upper came pretty quick, looks awesome, love it. Haven’t shot it yet. The only bad was it was on back order for a while . But worth the wait

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