Instruct: Classify Amazon reviews into positive or negative sentiment
Query: total disappointment

Bought the nailer from a B&D Factory store and was told it was a new product with no track record. I experiemented with various soft and hard woods with the same poor results. The gun wouldn't sink nails nor would it set them flush on either of the 2 settings. In addition it would jam after each fire requiring me to open the magazine and pull the clip of nails back to reset the gun. I returned the gun thinking I had a defective one only to find the replacement just as bad. Today the store refunded my money. It's a nice gun but it clearly needs more power.