Actually, I might be wrong.
"8.1.7.5 – removed text “any”, and “grip safeties"
So 8.1.7.4* now reads: "Disconnecting or disabling of safety devices including (but not limited to): manual safeties, firing pin, striker, and hammer blocking safeties." I guess they may still be covered under the "but not limited to".
*Really, IDPA? You gave the wrong rule number in your own changelog? It's hard enough to keep up.