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8.5" 300 BLACKOUT BARRELED UPPER - SEEKINS NOXS M-LOK 9.125" RAIL
8.5" 300 BLACKOUT BARRELED UPPER - SEEKINS NOXS M-LOK 9.125" RAIL


 
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MSRP: $445.00
Our Price: $339.99

Price with Selected Options: $339.99

Stock Status: (Out of Stock)

Product Code: MAS-083B1-SPNXM-09

Upper Receiver Options:


Barrel Options:


Gas Block Options:


Gas Tube Options:


Muzzle Device Options:



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DESCRIPTION
 
8.5" 300 Blackout Barreled Upper - Seekins Noxs M-LOK 9.125" 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" 300 AAC Blackout 1x7 4150 CrMoV Melonite Nitride Treated Steel

3. Handguard - Seekins Precision NOXs 9.125" M-LOK Rail

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 Short


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: 2 CLICK HERE TO WRITE A REVIEW »

  0 of 0 people found the following review helpful:
 
5 of 5 Quality top notch at budget friendly prices December 19, 2019
: from NOVA, VA United States  
This is my second upper from MAS and def not my last one. From the options to the customizability to the AMAZING customer service you can’t beat them. From a basic build to a build using high end parts they kept cost as a priority. And it’s shows. You can get a full upper from them for a lot less then buying the barrel, upper and rails on your own and trying to build it. I purchased my recent one on Monday and they built it tested it and shipped it 2 days later and I had it on Friday.

THANKS AGAIN MAS DEFENSE Family!!!

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  0 of 0 people found the following review helpful:
 
5 of 5 300 blackout November 13, 2019
: Kevin Clarke from Chandler , AZ United States  
Great customer experience, I saw a different handguard that wasn't apart of their current barreled uppers. They created a specific link with my upper to create my build. If your looking my to Kickstart your AR build your is the company to do it with.

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