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Cole Robinett from Jefferson City, MO United States
Everything was just as described and was shipped and deliverd fast. Quality is better than i was expecting by far. Will definitely be ordering more from them.
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Decent upper
September 20, 2022
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The upper looks great there was only one issue with fit and finish. There was too much build up of the coating on the upper reciever in the take down pin holes perventing the pins from pushing through. The fix was to run a drill bit into the holes and ream it out. After doing this everything worked perfect.
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The 7.5" Upper Great Product
October 6, 2021
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from , New Mexico
Greatly impressed with the build quality! Just wow! The build is light weight and had plenty of room for addons.
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Great product
June 16, 2021
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Jeff from , Oregon
This is my second fully assembled upper from Mas Defense. Look great and operate flawlessly
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0 of 0 people found the following review helpful:
Out done them selfs
June 7, 2021
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Corey Neuenschwander from Jenera, OH United States
If you're in the market for a pre-assembled, attention-grabbing, accurate, short barreled upper? Then stop looking and purchase this five Star beauty. This is the third upper I've purchased from this company and have not one complaint. All completed uppers come pre-assembled and ready to pop your pins right through, drop in your charging handle, bolt carrier group, slide in a fresh mag and aim down the range. The 7.5 inch is so far my favorite for practice clearing rooms and crowded areas. I look forward to using this in close combat Target tournaments. Thank you Mass defense for not only a sharp, badass, addition to my tool, but for the speedy delivery, the extra swag and always having my back.
Great product. 
Decent upper 
