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

8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE SQUADRON 7" LIGHTWEIGHT QUAD RAIL
8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE SQUADRON 7" LIGHTWEIGHT QUAD RAIL


 
MSRP: $383.00
Our Price: $338.99
SALE PRICE: $288.99

Price with Selected Options: $288.99

Stock Status: (Out of Stock)

Product Code: MAS-083B1-MDSQ-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:



Qty:  
DESCRIPTION
 
8.5" 300 Blackout Barreled Upper - MAS Defense 7" Squadron Lightweight Quad 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 7" Squadron Lightweight Quad Rail - (ID 1.8")

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

5. Gas Tube - Pistol Length Stainless Steel Gas Tube

6. Muzzle Device - A2 Half Cage

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

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 12 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Solid upper October 8, 2022
: James  
Looks great, shipped quickly. Haven’t put any rounds through it yet.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
4 of 5 9” 300blk upper July 25, 2022
: Xavier S. from IA, United States  
Only have 200 rounds through it but it ran great out in the heat. Ran 60 rounds in a mag dump/ how fast can it go type drill, then the other 140 were at various speeds. Didn’t blow gas everywhere like other uppers I’ve used.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 I love this 300 blackout upper August 3, 2021
: Brian Kliem from Spring, TX United States  
This is my first build for my ar-15 300 blackout. After looking through many different companies who offer uppers for AR-15s I found this brand to be one of the best. Beautiful design gives me everything that I need in an upper it gives me everything that I need to customize to my liking. I will be ordering again because now want to build a rifle. Thank you so much for an easy process in my build. Plus anything and everything that I would need for my AR-15 or any build I can find on here.


Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
4 of 5 Good Not Great April 30, 2021
: Frank Robinson from Pahrump, NV United States  
This is a nice upper but the finish is not great. Hand guard has a factory blemish. I have not used it yet. Hope it shoots great. Time will tell.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MAS Defense Reply: Robert, I apologize for the issue. We have a very good quality control process where 2 employees review every part before it leaves our facility. We strive for perfection but unfortunately we are human and do make mistakes from time to time. With that said, someone should have caught the blemish on the handguard before it shipped out. We emailed you and will make this right!
Thank you for your business and your feedback!

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
5 of 5 Fast shipping July 29, 2020
: David Coon from Port Angeles, WA United States  
everything looks great.  Shipping was extremely fast for the impatient shopper. Can't wait to get to the range

Was this review helpful to you?

View All Customer Reviews