Last night I was finishing up my savage rebarrel when those darn small parts gremlins stole the detent ball for the extractor. Was hoping to have it done to sight in this weekend. this morning I stopped into the local ace and what do you know they have chrome ball bearings in several sizes. the smallest thy had is close hopefully enough to work. at $.25 worth a try. They have saved me a few times with small screws and springs. the one in our town even has a big selection of gun screws.