Mystery firing pin identification please!

[Steve Flanagan]

Picked up this firing pin and an early Colt M16 birdcage flash hider at garage sale. Cant find out what this went to. Completely unmarked, guy at one time had everything from Hakims to SKS's but long sold off prior to his death. Any idea what this went to?
Thanks guys.

[TerryK]

Hi

Springfield 03 ,03A3 striker
Terry

[Steve Flanagan]

Firing pin

Thank you, will find a good home for it!