I've found on the XS Sights website that they have the set, which I know you're not looking for. However, I can only access the mobile site at the moment. In the past, I know I've seen just the front blade available on the full site. https://www.xssights.com/Products.aspx?CAT=8267 The model you listed is discontinued I think. It doesn't appear on the OFM site and dealers are out of stock from what I've seen. To the best of my knowledge, the Meprolight will work, but I'd contact them first to be certain and see what the return policy is through vendors in case it doesn't.