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

8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE RIDGELINE 9.87" M-LOK RAIL
8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE RIDGELINE 9.87" M-LOK RAIL
 
Alternative Views:


MSRP: $423.00
Our Price: $348.99
SALE PRICE: $298.99

Price with Selected Options: $298.99

Stock Status: In Stock


Product Code: MAS-083B1-MDRL-10

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
 
8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE RIDGELINE 9.87" 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 - 8.5" - 9.5" 300 Blackout Barrel. Click on the drop down box above to choose from our selection.

3. Handguard - MAS Defense "RIDGELINE" 9.87" Slimline M-LOK Free Floating Handguard - (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.

***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: 17 CLICK HERE TO WRITE A REVIEW »

  1 of 1 people found the following review helpful:
 
5 of 5 Barreled upper June 1, 2023
: Joel Uhl from Vassar, MI United States  
I've ordered from you guys before and had good service. Processing is quick. I have no problems on your side. Fed ex however is another story. I still have not received my order, information is hard to get and their website navigation is lacking. Hopefully they get things straightened out soon.


Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Amazing, Exactly what I was expecting! October 14, 2022
: Jason D from OH United States  
Well, I ordered the upper, a CH and a BCG. I was expecting the three items to be in the box like you would receive rom anywhere when ordering three different products. The people at MAS actually installed the CH and the BCG in the upper for me before they neatly wrapped and packaged the upper! Not to mention the upper is flawless and of excellent quality, especially for the price!

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Customer service July 1, 2022
: Josh Erdman from Hamburg, NY United States  
So I ordered 2 for fathers day last minute I received them and in fantastic condition once again amazing products to match there customer service

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 First Time Customer April 20, 2022
: K H from Ofallon, MO United States  
Upper was was exactly what I expected.   Packaged carefully and fast shipment!  I would recommend Mas Defence  and will use them again.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Perfect match February 25, 2022
: Peter Wallace from San Diego, CA United States  
Loved how it turned out. The F.D.E.. color was my worry that it wouldn't match my lower  ut it worked out perfect.

Was this review helpful to you?

View All Customer Reviews