I have two +- $20 reflex ones from Amazon on my CO2 pistol and my P17 pistol which has the whole upper half of the body as the cocking mechanism. So far they are holding up fine and a pcp will be no more hard on them that either of my pistols. At that price and some are less you can try it and see if you like it. I have gotten several chipmunks at 10 -20 yds with my 30 year old .177 Crosman SSP- 250 CO2 pistol with a $17 reflex site. I think you will like it. until the battery dies. Keep spares.Edit: replaced link