Original Tokyo Marui manuals are primarily in Japanese , though they include detailed diagrams and some basic English safety warnings. For full English translations, you may need to refer to community-translated guides often found on forums like Reddit's r/airsoft . Glock 17 User Manual - Tokyo Marui - FourLeaf.ie
Download the latest Gen 5 MOS manual from Tokyo Marui . Tokyo Marui Glock 17 Instruction Manual
Depending on the specific generation of your Glock 17, you can find the relevant manuals here: Original Tokyo Marui manuals are primarily in Japanese
If you need a physical "paper" copy and don't want to print one yourself: Tokyo Marui Glock 17 Instruction Manual