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FoldAR AR-15 Complete .300 BLK Upper Receiver
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Most Helpful Positive Review Works Great
Had no issues compared to a traditional upper receiver. I was able to fold/unfold multiple times and it retained accuracy. It is very nice to be able to transport in a compact size whether it is in a case or backpack.
Most Helpful Negative Review Buyer beware
The manufacturer claims to have a full warranty. I purchased the 16 inch .223 version of this upper from another website. The upper was defective and would not mount to any of my lowers (I tried 4 different brand lowers) I began researching the upper to figure out what the issue was. In my research ...
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wouldn't cycle because of feed ramp issues.

by Roger McDavid, Verified Owner from OH, United States Written on July 7, 2019
upper failed to feed miserably. .300 blk cartridges would get stuck feeding from the right side of the mag every single time. tried multiple mags. tried to smooth out the horrible line where the barrel/chamber part of the feed ramp meets the feed ramp cut into the upper but that was not enough to get it to cycle.
Would recommend: No
4 of 7 found the following review helpful.
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