I just bought my first pistol from Academy and it is a M&P9 shield no safety. It was the only one they had in my price range. I thought it was a new gun but after looking on line I found they started making it in 2014. Anyway I get it home and was checking it out and I found it is extremely hard to pull the slide back. Even my twin brother that has several pistols had a hard time pulling it back and said that it was not right. Academy paper work says "all sales final". Do I need to bring it to a gunsmith to get his opinion? Has anyone heard of this?