mate
in the name of science I was disassemble my M 88 bolt

here with another M 92 Mannlicher bolt

it may not look this way on the pic but all parts have the same overall lenght and same dimensions

I have another M 92 firing pin with spring in the house and the spring 's have the same outside diameter - 11,4mm but there is a difference in lenght:

119,5mm for the M 92 spring
114 mm for the M 88 spring

there is not realy a reason for this difference and I can only believe the M 88 spring hade some trouble in life, standing cocked for a long time.

notice that the Mannlicher firing pin was cut on the rear end for a lyman side once

the reason for the longer tip of the mannlicher firing pin is the different bolt head
look here:

I will send them a mail asking how long the M 88 spring in stock realy is.