I had a bad one ,, trigger was horrendous,, I also had a couple of leaks ,there’s a pipe linking the bottle which had some sort of nut as a fitting I had to have a complete new tube made to stop it leaking ,when it was working apart from the trigger it was reasonably accurate with jsb exact heavies in 177 also the bottle at the rear is used as a stock but it’s quite long and I found it too long for me when I put a jacket on,personally I wouldn’t buy another one