Gmod Weapon Numpad thingy

Well i binded a key on three and i cant seem to return three, back to normal.
Like 3 for the weapons, I just need the code for three. Post a comment if you dont understand, I cant seem to explain

What do you mean?
Did you bind like a ā€œLā€ key to numpad_3?
Is your numpad lock on?

This is really hard to understand with my measly brain

The code for the Ar2 and smg

If you go to the keyboard options there should be a function that binds your numpad keys for gmod.

Go to options -> keyboard -> set back to default.