I don't have a S&W 5.7, but I know that it's an M&P model so the slide is cut for optics. It should be like my M&P 10mm and come with 6 or 8 plastic optics plates for different style red dot optics. I have read about a few issues with using the plastic plates for larger caliber pistols (with lots of recoil), but the 5.7 has almost no recoil so the S&W plates should be fine. I have the S&W plastic plate and a Holosun 507C on my 10mm and have had zero issues.