Excellent quality and very reasonable prices. Perfect machining with no tool marks or flaws. Flawless finish that should stand up to anything. I am very happy with the upper and BCG combo I ordered. BCG is also well put together and excellent quality. Thank you for the quick shipping and easy checkout process. I highly reccomend MAS Defense!! THANK YOU!
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2 of 2 people found the following review helpful:
Awesome complete upper
May 20, 2021
:
KURTIS from Delaware, OH United States
This kit, and I'm sure the other groundworks upper kits are solid. Rail mounted nice clean and tight. Finish on all the parts is great. Gas block and barrel nut installed fine, torqued right. I swapped the A2 muzzle device for a brake I had laying around. It's going to be a fun pistol build! If you see these up on their site. Just send it.
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