I was loading a mag into my gun and the clip fell out and so did the mag release spring and i look in the box for the tool and, it is not in the box. So i dont know what to do.
Ahhhhh
All you need to do is insert the magazine catch spring in its housing within the frame and press it into place.
You don't need the FnH tool. It does help, but you can simply use your fingers to squeeze the spring together and slide it into the housing. Then push it down to seat it in the magazine catch.
If you are uncertain how to get the spring back in its housing this pictorial may help. Note if you get a font error after it downloads just download it again and the font issue should be resolved. Something with Dropbox.