Return to 8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE NERO 9.87" M-LOK RAIL
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  0 of 0 people found the following review helpful:
 
5 of 5 January 5, 2020
: from Harrison City, PA United States  
Stellar service, fit and finish. Can't wait to complete my build with this upper

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  0 of 0 people found the following review helpful:
 
5 of 5 Tripped my Trigger!! January 2, 2020
: Cora Braun from Onalaska, WI United States  
Awsome set up, looked exactly like I hoped! Quality fit and finish. All the parts were assembled properly and to specs and it looks and feels Great!! Love the insignia on parts, nice touch. Order came in timely matter and communication and tracking were awesome! Definitely will order from MAS DEFENSE again, and again!

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  0 of 0 people found the following review helpful:
 
5 of 5 Solid experience December 27, 2019
: David Owens from Williamsburg , VA United States  
My order was delivered quickly and it was everything I expected.  I ordered a second item two days later because I was impressed.  I’ll definitely use you guys again.

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5 of 5 Great upper! December 4, 2019
: Mirwais Ayazi from Sterling, VA United States  
Fast shipping, fast delivery , great upper. Edges, finish, and everything feels and handles great. Fired 150 shots through this and had no malfunctions (KAK BCG). Planning to use it to bag a deer.


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5 of 5 300 blackout 8.5in October 12, 2019
: Taylor Leighton from Georgetown , SC United States  
This is perfect, exactly what I wanted and was looking for. Thank you guys!

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