Archon Type B ignition kit. Factory OEM. Current production firing pin and rear cover plate (no firing-pin indicator).
In the kit:
1× Firing Pin Rebound Spring (Pos. 9)
1× Firing Pin Guiding Sleeve (Pos. 18)
1× Firing Pin (Pos. 8), current production, no indicator
1× Firing Pin Spring Guide (Pos. 20)
3× Firing Pin Springs (Pos. 19)
1× Rear Cover Plate (Pos. 13), current solid plate (no indicator window)
Older PTR-era Type B pistols used a firing-pin indicator in the rear plate. Archon discontinued that part after warranty issues. This kit includes the current pin and rear plate without an indicator.
Confirm it fits your Type B. Installation and final safety checks belong to a qualified gunsmith when that is the right call.