I used to have a hw57 i purchased it for my lad (12 year old) to use it wasn't very reliable at first . the pop up pellet loader broke bottom fell off and had to go back then the tiny spring in the locator on the underlever went so went back again then power dropped so fitted a full tbt drop in kit shot lovely and then lad didn't like going anymore so sold it someone ended up with a lot better little hw57 than I had when I originally bought it