I used to have a few Ruger PC9s (another rifle I wish I had kept at least one of....). The below parts are new except for the recoil spring/rod. The spring/rod came with one of the rifles I purchased so I don't know anything about it.
New from Ruger
1 Sling Swivel Adapter Kit - PC (this is the barrel band that has the sling swivel adapter)
2 Barrel Screws - PC
2 Receiver Spacer - PC (below 470-01666 & 480-02000 to 480-03110)
2 Take Down Screws - PC
2 Take Down Screw Lock Washers - PC
1 recoil spring/rod (used, origin unknown)
(does NOT include the take down screw flat washer, they were out of stock).
First "I'll take the parts" will get them.
Will ship within the 48 Continental United States.