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14.5" 300 BLACKOUT BARRELED UPPER - MIL SPEC BARREL NUT
14.5" 300 BLACKOUT BARRELED UPPER - MIL SPEC BARREL NUT


 
MSRP: $285.00
Our Price: $234.99

Price with Selected Options: $234.99

Stock Status: (Out of Stock)

Product Code: MAS-143B1-MDBN-00

Upper Receiver 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 - 14.5" 300 AAC Blackout 1x8 4150 CrMoV Hardened Steel

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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M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - NICKEL BORON AR-15 M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT MELONITE NITRIDE BCG M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - HYBRID GOLD TITANIUM NITRIDE (TiN) FORGED CHARGING HANDLE AR-15 - STANDARD TACTICAL LATCH

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

  0 of 0 people found the following review helpful:
 
5 of 5 May 2, 2019
: MICHAEL LUCAS from FALLBROOK, CA United States  


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  0 of 0 people found the following review helpful:
 
5 of 5 Exceptional quality, outstanding service March 30, 2019
: Christian S from WA United States  
Quick delivery, quicker assembly. Even with customized options and specified assembly comments. FDE coloring is accurate and looks as great as can be expected, nice packaging and care for detail. Very satisfied with my product as someone who spends carefully and expects quality.

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  0 of 0 people found the following review helpful:
 
5 of 5 300 BO June 17, 2017
: paul f  
Super great upper. best service in the industry.

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  0 of 0 people found the following review helpful:
 
5 of 5 This Upper Exceeded Expectations. February 28, 2016
: Robert T  
This is not my first AR platform, but my first 300 BLK. After many builds you learn the small differences between manufacturers on what many consider a universal fit part. After great satisfaction with an MAS 5.56 Barrel, I decided to buy a complete upper from MAS. I couldn't be happier. I've always shopped around for my parts for the most cost effective builds. After two builds using MAS parts, I am now a loyal customer.

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  0 of 0 people found the following review helpful:
 
5 of 5 Another upper, another superb product December 20, 2015
: Lester G  
After purchasing an upper before I was impressed with the build quality, value for dollar, and customer service of MAS. When the time came to build a 300 BLK rifle I knew that going back to the wellwas a solid choice and the product received proved that in spades. Nice attention to detail, including the after the fact adding of a delta ring assembly and great dialogue with the company amidst to confirm my desired endstate for the build. You won't go wrong ordering from them.

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