Probably you need a new spring for your slide lock.
Give Kel-Tec a call, and they'll probably sent you both a spring and a new slide lock.. all you have to do is remove the grip and stick it into place on the left side of the frame. Not hard at all!
Just a note but the part you refer to is the ejector not extractor. It is not terrible hard to replace. Before doing that just see if it is binding or frozen from lag of use. The part should move up and down very easily. With the slide off insert the mag slowly to see if the part is being lifted by the Follower. If it does not move then soak it in a little bore cleaner then move it until it comes loose. Hope this helps
yep. sent it to kel-tec and got it fixed. i lost a spring and it was replaced by a knowlegeble gunsmith in town. I fired 25 rounds through it, and no problemo! cost me $40.00, with FFL and all.... oh well, it least it works again.