If you are talking about the magazine springs the P90/P97/P345 magazines are the same and can be used interchangeably. if you are referring to recoil springs that is a different part number...Sorry it has been a long time I have been in this fine forum. I recently purchased a used ruger p97dc and i want to know if i can use the p90 recoil springs on the p97dc. Thanks in advance.