Mediocre at best
First one wouldn't eject. Ejector would stick when plunged. KAK sent a call tag, replacement was better but not smooth and firing pin aperture was out of round with a ledge around the aperture which contacted the firing pin tip and can visually see it push the pin to the opposite side of ledge. KAK replaced that one out. Now the 3rd one arrives. Ejector still gritty, bolt face has burrs at extractor cutout which tore up my brass. I cleaned up the burrs on the bolt face, cleaned up the ejector orifice which had some crud (assuming from the manufacturing process) inside the spring likely causing some of the gritty feeling I was getting. I don't have the means to gauge the bolt carrier, but everything else seams fine. It functions at this point. I have relegated it to backup and will not likely purchase anymore from KAK. My experience with their customer service (Rep was Cody) was very good, just not thrilled with the quality of product.
