Recently ordered a ported duty slide from these guys. Price was extremely reasonable! Product showed up in a timely fashion. All Glock OEM internals and sites fit PERFECTLY. I assembled the upper without polishing anything, slid it directly onto an SCT lower I had on another build and put 15 rounds down range flawlessly. Then put the slide onto a PSA lower and again, 15 rounds flawlessly. Finally the Strike Arms preassembled lower I ordered for this build showed up at my local FFL. I picked it up, put the Arm or Ally slide on it, drove directly to the range and low and behold.... 50 rounds without a single malfunction of any kind. This is a great product, and a great company to do business with from every angle. Thanks guys!