Airsoft Tech shows how to take apart from the SIG Air ProForce MCX for upgrade purposes of this two-part of video... "In this video, I show you how to completely disassemble a SIG SAUER airsoft replica, step by step, and explain how to improve its internal performance with some key modifications. Whether you're a beginner or an advanced technician, this tutorial will help you fully understand the internal mechanics of your replica and how to take it to the next level."