The Kimber 84M is a rifle! The other two are firearms!
I loath plastic parts on a rifle!
I think Browning's designers moonlight as comic book illustrators!
What in the world is this???:
That is a button to lift the bolt handle while leaving the tang safety in the SAFE position. This is actually a pretty clever way to retain the tang safety and still have a locking bolt that's safe to unload. That's the best design of any gun I own.