Custom 98 Identification problem

Custom 98 Model, the internal workings are different than I have ever seen so far. Bolt sear has a push spring instead of a pull spring. Internal parts on the bolt are plastic instead of metal. Externally the trigger guard is slightly different than the model of about 2003/2004. Am curious if this is the new ACT version. There is nothing externally that indicates if this is a special model of any kind. If this is a newer model I'm not impressed. The trigger sear is rounding and the bolt is starting to show wear. The gun does not appear to be very old. I haven't found a manual online showing this different operation. I acquired the gun secondhand and don't have a manual that came with it. Need help in identification of the gun model.

the newer 98 customs have the custom pro internals, which is the newer sear / sear spring, and also different barrel threads than the older 98 customs. as far as the sear / bolt wear, you can always take a file to them, and re-sharpen the corners.