The two copper colored items are trigger play springs.
(They can sometimes break and cause the dreaded "Trigger Click"
but cannot be replaced without the accompanying rivet.)
The other small bag looks to contain an ejector depressor plunger and spring.
(Perhaps someone removed them from the pistol to eliminate the magazine safety.)
They seldom fail so I can't imagine why someone would buy them as "repair" parts)
You've already identified the guide rod, although it appears to be steel, when the originals were plastic.
John
