Just about anything will work on a rifle. Though I'd avoid the 'stuff' that has to be shot wet or that has a wiper on it.
I've got two Tactical Innovations "Quests", great on a rifle. First-round pop on a pistol is not hearing safe.
I've got a Dead Air Mask, almost no FRP, and it is hearing safe on a pistol.
I wouldn't buy anything but a Dead Air Mask after my experience with it.
Jerry
