The way this works is, you send in your M&P Slide, then we strip the factory coating and remove the factory text. Next we engrave the three front serrations to a depth of .020 in using our industry leading high power lasers. We also add a laser port behind the three serrations that flows well with the milling and serrations. We use lasers for the porting and serrations to give you a clean, crisp design that flows with the rest of the gun that you can't get using an end-mill. This price includes everything shown in the picture, including one color of cerakote. please message for any questions.