Crimson Trace 0130000201 CTS-1520 W/Mounting Kit Black W/Red Laser Compatible W/S&W M&P/Glock Handgun Dovetail Mount.The Crimson TraceA(R) CTS-1520 Dovetail Mount Combo Kit lets you mount a best-in-class red dot on your trusted Smith & WessonA(R) or GLOCKA(R) pistol. No need for expensive gunsmith work to cut your slide or worrying about which Red Dot will fit. This kit uses the existing dovetail notch to secure the low profile adapter plate to the slide. Then simply attach the included Red Dot sight to that adapter plate.The Dovetail Mounting Kit is compatible with some of the most popular Smith & WessonA(R) and GLOCKA(R) pistols on the market today. Now you can use the best red dots on the market with the pistol you have trusted for years. At Crimson TraceA(R) failure is not an option.