I ordered two, one to use, one to lose... For folks that have misplaced or launched that tiny spring, GPC seems to have got another batch in...
https://www.gunpartscorp.com/products/525130D
Firing Pin Block Spring, Stainless
Manufacturer: RUGER
Model: P85, P85MKII, P91D, P91DAO
Product #: 525130D
https://www.gunpartscorp.com/products/525130D
Firing Pin Block Spring, Stainless
Manufacturer: RUGER
Model: P85, P85MKII, P91D, P91DAO
Product #: 525130D