Selling because I haven't played in over a year and need to get rid of some stuff. Pistol runs great. The upper is fully built with some performance parts in the lower. Hop unit is TM with an I-key. Tightbore barrell Cow cow nozzle Lightweight bbu Lightweight guide rod I bought the slide a long time ago before they were discontinued for close to $300 It's been a couple of years so I don't remember all of the parts that went into it but don't hesitate to reach out if you have any questions.