Things I liked:Excellent quality with regards to fit and finish.
very easy to install. Things I would have changed:It's just too tall. And obstructs the breech. I hate to give it such a low rating ,but it could use some refinement. What others should know:I had to return it. The mounting position is way too tall . My neck isn't that long and i'm 5'9".
Things I liked:Love this product.Been using it on all my multi-pumps for many years.
Literally the "life Blood" of your Air gun. Things I would have changed:A larger bottle would be a welcomed addition . What others should know:Use it as recommended and your pumpers will give you many years of good service.