We adapted the helmet used by Germany for extra protection.
One of my soldiers took an Iraqi .380 to the left side of his K-pot. It knocked him down and he wound up with a hell of a headache and sore neck but he was otherwise fine. The round did compromise the K-pot and he had to turn it in and get another one, but no big deal. I don’t know if he would been as lucky had be been wearing the old steel pot.
I really did not much care for the new PASGT. The Army cut them down to save on weight, but they were higher on the sides and in the back. Fine I guess if you do crazy stuff like jump out of perfectly good airplanes. And since we no longer used MILES gear, opting for VERY COOL paintball guns (which looked and felt exactly like an M4, ans which stung like crap when they hit you) less helmet in the back was no big deal. And the weight savings was less than a pound. Even wearing the new ones for 16 hours at a pop I never felt any appreciable difference.