I have an Aftec in my 38 super.i had it installed after my standard extractor kept losing its tension and causing failure to extract jams.Since then I have never had a further jam like this.They are expensive,but worth it.They do need to be fitted properly to work however,but this is a pretty simple thing to do.Its also important to change the little springs fom time to time.
Freedom arms seems to be the guys in Canada to contact for this part