I received my stainless 9MM commander slide assembly 4 business days. Very well built high quality. I used it on top of a stealth arms frame. Excellent fit and finish. Best lock up of any 1911 that I've had the pleasure of working with. Only had minor fitting of the hood to slide and ejector to firing pin stop. It bench functions perfectly. If it shoots half as well as it looks I will be extatic. This is the second upper that I've purchased from Remsport and I'm truly impressed.