Having trouble with your GHK Glock Gen 5 airsoft pistol? 4UAD Smart Airsoft offers solutions. From unboxing and stock hop-up chamber issues to barrel hacks, trigger upgrades, and performance testing, their comprehensive guide covers everything you need to know. Learn how to disassemble and upgrade your pistol for optimal functionality and accuracy. Discover expert tips on one-hand reloads, trigger installation, and more. 4UAD Smart Airsoft provides valuable insights to help you get the most out of your GHK Glock Gen 5.