HOME > AR-15 > AR-15 BARRELED UPPERS > 5.56 NATO / .223 > 14.5" 5.56 NATO >

14.5" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE 12.62" MW8 OCTAGON M-LOK RAIL
14.5" 5.56 / .223 AR-15 BARRELED UPPER - MAS DEFENSE 12.62" MW8 OCTAGON M-LOK RAIL


 
Alternative Views:
MSRP: $413.00
Our Price: $344.99
SALE PRICE: $294.99

Price with Selected Options: $294.99

Stock Status: In Stock


Product Code: MAS-145N2-MDOC-12

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:



Qty:  
DESCRIPTION
 
14.5" 5.56 / .223 BARRELED UPPER - MAS DEFENSE 12.62" MW8 OCTAGON M-LOK RAIL - BALLISTIC ADVANTAGE BARREL

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 - 14.5" 5.56 / .223 1x7 Ballistic Advantage M4 Contour Profile 4150V Melonite Nitride - Modern Series BABL556009M

3. Handguard - MAS Defense 12.62" MW8 Octagon M-LOK Rail - (ID 1.8")

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

5. Gas Tube - Carbine 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.

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

RELATED ITEMS
M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - MELONITE NITRIDE FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID NICKEL BORON M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID GOLD TITANIUM NITRIDE (TiN)
SALE PRICE: $79.99
Our Price: $24.99
SALE PRICE: $99.99
SALE PRICE: $99.99
M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT MELONITE NITRIDE BCG FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - NICKEL BORON AR-15 M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID GOLD TITANIUM NITRIDE (TiN)

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 2 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Awesome upper! July 23, 2023
: David Cole from Boone, NC United States  
I couldn't be happier with my purchase, had an issue with the first one. But reached out and got it resolved quickly! I've have used Mas Defense for many projects and have been more then satisfied with every purchase. This upper is very light compared to others I've seen but seems to be built of excellent quality.  The fit and finish are outstanding and will be purchasing from Mas Defense for future projects!

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Another Great MAS Product! July 3, 2023
: Adam O. from Western CO United States  
If you have done business with MAS before, you know what to expect - great products, great prices, and great service.  They did not disappoint this time either!

I believe the Aero Precision Enhanced Upper is the gold standard for comfort, and the size and shape of this upper is on par.  I love this upper.  Still in the build phase but if the past MAS builds I have done are any indication, accuracy will be tight and function will be flawless.

Was this review helpful to you?