Just a short video on how to unlock the customize weapons ability :) Twitter - If the video helped you please leave a like and .\r \r Metal Gear Solid V: The Phantom Pain Gameplay Walkthrough Part 1 - First 3.5 Hours! (MGSV PS4 Lets Play Gameplay Commentary) .\r \r Weapon Customization is a somewhat hidden feature in Metal Gear Solid V: The Phantom Pain. This guide shows you how to unlock it. Step 1: Beat Side Op .\r \r METAL GEAR SOLID V: THE PHANTOM PAIN CUSTOMIZE WEAPONS GUN METAL GEAR SOLID 5 CUSTOMIZE GUN SNIPER METAL GEAR SOLID 5 .