Things I liked: It works as advertised. I put Velcro on the stock and on the concave side of the holder. The straps are not needed. It holds a nice selection of pellets.
Things I would have changed: I did! I used self sticking Velcro on the stock and on the pellet holder. Doing away with the Velcro straps that come with the holder.
What others should know: For single shot air guns this is a handy accessory.