Help to ID glock make

[Bavo]

Well my friend has asked me to fix his glock which I said I would look into. But to my delight I can't even if which brand it is. I am sure it's not a tm or we glock and think it might be ksc, kwa or kjw. But I was hoping someone might be able to give me a definitive answer. It's at least 5 years old and mainly being held together with tape.

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[Bavo]

Mods delete if you can every time I add a new one it adds it multiple times