looking for a way to secure my rifle setup that's quickly retrievable yet safe and secure from kids.

Will be using a suppressed sbr setup and originally really liked the budget friendly Hornady RapID AR wall safe but cant seem to find it anywhere due to being discontinued

anyone know where to locate one/something similiar?

Amazon and sportsman's guide are showing them.

What age kids are we talking about? An unloaded gun with a magazine that's out of reach of little ones is as safe to them as anything, but allows you quick access in the event of need. If they're tall enough to reach where you can, then a whole different learning process needs to take place. I'm not anti-safe, but I want my home defense gun where I can snatch it on my way out of bed. Everyone has their comfort level and what's appropriate for their situation. Not judging. I just prefer a "need it now" gun to be available now.

https://www.ar15.com/forums/Armory/Safes-andamp-Home-Security/46/

We have several  different sizes of Vaultek safes at work, and they have been fast and reliable over the years.

I do see safes as a device for keeping little kids away from them.  Kids first need to be taught about guns and when and how to use them.  This is a difficult problem to have.  Ready to use in case you need to and then a safe for kids to be around.  I don’t have any of my kids home now.  I don’t remember much about guns with them.  That’s just me.