Things I liked:Nothing Things I would have changed:In the advertisement of this product let people know there is a possiblility of damage to the bore of your Air Rifle What others should know:There is a possiblity of damage to your Air Rifle!
Things I liked:Everything from fit to finish and quality of build accuracy is best of any gas piston I have owned including one quality springer. Mine is the .177 cal. shoots Crosman preniers Domed 10.5 most my shooting is 25 yds outstanding accuracy.. Things I would have changed:Nary a thing What others should know:I have heard that they will no longer build this model. so I would get one while they are available..