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Heckler & Koch MR556-A1 Complete Upper Receiver Kit
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Everything I expected and more
High quality upper kit... obviously. Comes with a buffer and buffer spring, soft case, manual, and m-lok hand guard with QD mounts. I ordered the traditional HK quad rail for this. Shoots very well on an aero lower. I am going to build a BRN4 lower from Brownells to match.
Pros:
- High quality
Cons:
- Price (a little steep!)
Would recommend: Yes
1 of 2 found the following review helpful.