Saudi grenade - in fact a South Korean K413

I hav found this image in the web. Described as a Saudi grenade.
It appeares much like a variant of the US M67 just without the “neck”, with a coating for better grip and a different fuze.

Is anybody able to tell the exact designation and maybe some background?
Are docs available?

saudi

Doesn’t look like a M67 variant, looks like a K413.

You are right!
Thanks for the lead.

No problem.

I changed the thread title to get it correct.