I have been using HP1's for about two months, every day while working at a major range in the southwest. They work as advertised, are adjustable and comfortable. The ear cups are a little snug and that might be a problem in warm climates like here in Arizona during the summer months. I have also used the Tac 6 and Pro Ears. I like the HP1 best. I think Peltor makes it by special contract for Dillion.
"Train to Defend, Train to Survive, Train to Win"