Falcon 5494 is just the Auxiliary Fire Pin.
Von Duprin 050171 is the Auxiliary Fire Pin and 2 each 499f strikes to convert a pair of 98/9927-F, 33/3527-F, or 2227-F devices to Less Bottom Rod (LBR) in the field.
Von Duprin 051860 is the Auxiliary Fire Pin when used with 98/9947/47WDC/49-F and 33/3547A/49A-F devices.
Von Duprin 48968887 is the Auxiliary Fire Pin and a few other items required when used with 98/9950WDC-F and 33/3550WDCA-F devices.
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