Need a little more info. How old is the gun? Idea of how many rounds through it?
I would start with a disassemble, (look for any scrapping of parts), a good cleaning and some gun oil.
Thanks for the response. I'm a little slow getting back in ... got lost in space. Bought the weapon new three years ago. It has only had maybe 20 rounds fired. I disassembled the weapon recently but I will again paying more attention to any scrappings.