I am sure there are ways to dry fire them, but it depends on the action of the rifle. Traditional rifles for instance we used to put a rubber pencil eraser on the nipple and then click away. On some inlines where the action is exposed, you can put a soft block between the hammer and the 209 plug, but on the Omega or Optima with the closed breech, perhaps if you left a primer in there you could dry fire it, but I really do not know. I don't own one of them closed breech rifles..