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8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE MIL SPEC BARREL NUT
8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE MIL SPEC BARREL NUT


 
RETAIL: $321.00
Our Price: $299.99

Price with Selected Options: $299.99

Stock Status: In Stock

Product Code: MAS-083B1-MDBN-00

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 - Mil Spec Barrel Nut

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.

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 21 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Excellent Service May 3, 2021
: Keith Malone from Monroe, NC United States  
I purchased a 8.5” 300 Blackout barrel.  I had a few questions before purchasing.  I was very impressed that they responded so quick….actually got a response first thing the next morning on the 3 occasions I emailed their customer service.  I would definitely use them again….I would just like more product in stock and I would use them for everything.

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  0 of 0 people found the following review helpful:
 
5 of 5 Awesome Attention to detail July 12, 2020
: Brian Rodriguez from Las Cruces, NM United States  
For what I was looking for i can say it was perfect.. i was completely blown away at the whole deal. I took 4 days and over a holiday?!!! Who does that?!! Well These guys do, and I'll gladly do business with them again for my sexy project.

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  0 of 0 people found the following review helpful:
 
5 of 5 July 3, 2020
: Thane Johnson from Spirit Lake, IA United States  
MAS went above and beyond!! Thanks again guys

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  0 of 0 people found the following review helpful:
 
5 of 5 awesome product July 1, 2020
: Gary Auman from Fayetteville, NC United States  
was exactly what I ordered and the best is you upgrade to what you want. thanks masdefense for a order that's awesome and right

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  0 of 0 people found the following review helpful:
 
5 of 5 Great value June 25, 2020
: Kevin Zaccone from Hobart, IN United States  
Allowed me to build a fine rifle piece by piece, selecting every option. Solid barreled upper, key part of my build. Will be doing more business with MAS!

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