Return to 8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE SQUADRON 9.87" LIGHTWEIGHT QUAD RAIL - FDE
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  0 of 0 people found the following review helpful:
 
5 of 5 Impressive! December 14, 2023
: Daniel Rodriguez from Kenneth city, FL United States  
The fit and finish,  the ability to pick and choose parts, the quickness. MAS Defense will definitely have my business again. I'm super impressed!

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  0 of 0 people found the following review helpful:
 
5 of 5 Amazing Product, Amazing company November 10, 2022
: Nick G from OBX NC, United States  
Gotta say the 8.5 inch lower that I bought exceeded my expectations, not only did it show up 2 days before it should have, but they threw in a can coozie too. I don’t know how y’all knew I collected coozies but stay out of my head!!! Lol. Was a nice touch can’t wait to let freedom ring with this upper

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  0 of 0 people found the following review helpful:
 
5 of 5 Looks clean, shoots clean! August 11, 2022
: Andrew G. from Salt Lake City  
Man do I love this thing!

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  0 of 0 people found the following review helpful:
 
5 of 5 300 BLACKOUT upper May 27, 2021
: A M from Virginia Beac, VA United States  
In todayS trying times you don’t know what to expect when it comes to ordering over the internet.   I get it prices for anything Gun related has sky rocketed.  At MasDefense prices were certainly higher than before the pandemic but that is now universal.   MasDefense supply and prices was far better than their competitors.   I appreciated their good prices and availability of products.   Thanks for a speedy delivery of my order.

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  0 of 0 people found the following review helpful:
 
4 of 5 Service March 4, 2021
: Eric Bland from Auburn, WA United States  
Upper came quicker than expected, packaging was nice and secured.... haven't build my lower yet,  will update once i do.  will be ordering more parts from you guys thanks!

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  0 of 0 people found the following review helpful:
 
5 of 5 300 Blackout Upper June 26, 2020
: Gregery Ball from New Hope, MN United States  
Quick shipping. I was able to complete my build using this upper and I must say I will definitely buy my uppers from MAS Defense in the future. Works great with the binary trigger setup. No issues at all.

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  0 of 0 people found the following review helpful:
 
5 of 5 Great product great service! June 24, 2020
: twentythree from Durham, NC United States  
Bought my first Blackout upper from a different outfit, had trouble getting it to run. I was a little apprehensive about buying another but I wanted a pistol length gun for home defense. The MAS Defense upper was awesome! Snapped it on and went to town! Liked it so much I bought another one a week later! Thanks MAS!

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  0 of 0 people found the following review helpful:
 
5 of 5 Looks good June 19, 2020
: Peyton Matthews from Brinkley, AR United States  
Haven’t fired it yet, but everything looks great. Shipping was fast. Still waiting on the lower from another company.

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  1 of 1 people found the following review helpful:
 
5 of 5 Perfect! May 6, 2020
: Brandon Thomas from Athol, MA United States  
This complete upper kit is amazing. Well built and so far hasn't let me down. I was super happy with the upper kit and the service from MAS. Thanks guys!

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  1 of 1 people found the following review helpful:
 
5 of 5 Very satisfied customer!!!! April 30, 2020
: Chris Tippit from Fernley, NV United States  
Very fast shipping,  very good quality upper.

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