Need help with Flush Nut Rear sights

[LCPL Hanky]

Hey guys,
I need some help making sure this Flush Nut rear sight is USGI. I don't know enough about them to say yes or no. He's asking $700. Thank you for the help!

[Orlando]

Looks good to me. At $700 I think I would look around for awhile

[LCPL Hanky]

Thank you! How much do they normally go for?

[Orlando]

PM sent............