HOME > AR-15 > AR-15 BARRELED UPPERS > 300 BLACKOUT >

8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 9.87" M-LOK RAIL - FDE
8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 9.87" M-LOK RAIL - FDE


 
Alternative Views:


RETAIL: $425.00
Our Price: $368.99

Price with Selected Options: $368.99

Stock Status: In Stock

Product Code: MAS-083B1-MDNM-10F

Upper Receiver Options:


Barrel Options:


Handguard Options:


Gas Block Options:


Gas Tube Options:


Muzzle Device Options:



Qty:  
DESCRIPTION
 
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 - 8.5" - 9.5" 300 Blackout Barrel. Click on the drop down box above to choose from our selection.

3. Handguard - MAS Defense "NERO" 9.87" Slimline M-LOK Free Floating Handguard - FDE (ID 1.25")

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 (Pictured)

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.

RELATED ITEMS
FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - NICKEL BORON M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - ION GOLD TITANIUM NITRIDE (TiN) FORGED CHARGING HANDLE AR-15 - DUAL PULL AMBIDEXTROUS GEN 2
Our Price: $24.99
Our Price: $164.99
Our Price: $164.99
Our Price: $24.99
FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - NICKEL BORON M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - ION GOLD TITANIUM NITRIDE (TiN) FORGED CHARGING HANDLE AR-15 - DUAL PULL AMBIDEXTROUS GEN 2
M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - MELONITE NITRIDE FORGED CHARGING HANDLE AR-15 - DUAL PULL AMBIDEXTROUS GEN 3
Our Price: $139.99
Our Price: $24.99
M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT MELONITE NITRIDE BCG FORGED CHARGING HANDLE AR-15 - DUAL PULL AMBIDEXTROUS GEN 3

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 I love Mas Defense March 4, 2021
: Ricky from ALEXANDRIA, IN United States  
A few years ago, I built my first AR and got my barrel from mas defense. It's been great and never had an issue. Started a 300 Blkout build and came back to mas defense. I haven't shot with the built upper I received from them yet, but it arrived quickly and in perfect condition. Thanks a lot guys, super impressed with your work.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Great quality April 10, 2020
: RC from Dulce, NM United States  
I couldn't be happier with my new Mas defense upper.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 June 19, 2019
: jose arroyo from MIAMI, FL United States  
Product looks good I have not shot it yet.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Very happy! February 17, 2019
: Andrew Skeen from Brooklyn, OH United States  
I recieved my upper and was SUPER excited to shoot it! On top of being a VERY well made product I recieved  free merch with my purchase. With that being said I will definitely be making more purchases and will prefer Mas Defense to EVERYONE I know!

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 My first .300 aac January 12, 2019
: J.C. from Enterprise, AL United States  
I really enjoy the fit and feel of the upper, well put together, and FDE color is an exact industry match. Unfortunately I have not fired it yet (but it is test fired at MAS DEFENSE so I am not so worried) since I am still assembling the lower.

Was this review helpful to you?