The SP-01 is now single-action only with no firing pin block. Very short-travel, crisp, 2.5 lbf trigger. I'm very happy with the results.
Total cost of CGW parts was about $265 plus shipping.
List of parts is below:
Product
61050 Extended Firing Pin
61100 Firing Pin Retaining Pin
13# Hammer Spring
Manual Safety Race Hammer Kit (w/ Sear)
HPIN Hammer Pin
SSpacer Sear Spacer
Recoil Spring - 14# Gray
75060 Stainless Steel Guide Rod SP-01
RPTRS - Reduced Power Trigger Return Spring
TRPIN - Floating Trigger Pin
6SAO - Single Action Aluminum Trigger
SP - Starter Punch
