Replacement Selector switch Ball bearing?

[Shaun655]

I had the fire selector switch on my G&G get lose and when I took notice I realized that the small ball bearing that is sandwiched between the selector and the body was gone. Is there some place that I could get very small replacement ball bearings that anyone knows of? I am hoping that it wont mean having to order a new metal selector just for that very small bearing. Thanks in advance for the help.