Both look to be small face - .222/.223 size.
Replacement 788 bolts can be challenging to locate. You will not have any problems selling them. I assume you have applied for Equipment Exchange access.
Bolt sleeves came in two thread diameters - early, large, later (swept handle), smaller. The smaller diameter allowed a longer bolt shank for a stronger induction brazed joint. They still got broken off. The swept handle rifles also had inletted trigger guard assemblies, rather than surface mounted.
Be careful installing riveted extractors. Replacement extractors haven't been made for years, and they can be damaged during installation.
Luckily I have 14 more extractors and rivets for them lol I also have a few more firing pin assemblies as well I can show you pictures of?