After winning the 18'' MDWS Wolverine barrel and ALG rail I had enough spare parts stashed that I only had to order a few items to get a functional upper going to see what this bad boy will do. First thing I done was placed an order with CMT for a UPR-4 and have been very impressed with not only the receiver itself but ease of purchase and fast shipping. In my parts bin I already had an MDWS NiB carrier and a BRT gas block and mel. mid gas tube I picked up from him as well, also an ARP mini brake and Vortex scope mount. A quick order with Mad Dog got me a NiB 5.56 bolt in the mail so I was all set, until I just realized a few days ago I forgot I had a port door but no pin and spring, oh well can pick it up later. Grabbed an old Burris 3-9x40 ill. dot that I've had forever and this puppy is rollin.