Reply To: New HW110
Part of the problem with leaking HW100s is a 12mm oring used to seal the breech. The factory oring is oversize and speced as a destructive crush fit. If reused, this oring will leak. Many people replace this oring with a smaller size to correct the problem. Of greater concern with the HW100 are defective .22 barrels. There have been many reports of poor accuracy due to bad barrels in the .22.