This package includes everything in the Duty Tune & Inspection, plus the following:
 
Extractor face filed and polished
Firing pin polished
Feed ramp wetsanded and polished
Chamber polished
Sear polished
Disconnector polished
Hammer hooks polished
Trigger bow and body tuned for optimal movement
Trigger bow polished
Sear spring polished
Slide and frame mated/smoothed