It’s been a while since I’ve played so forgive me if I can’t answer everything. TM lower that I slightly nodded, Gold Speed trigger and sanded down rail (just cosmetic). The upper I don’t really remember the name of some parts. Gold Aluminum slide with aftermarket internals. Stock Hopup with Unknown outer barrel. It does have a aftermarket inner barrel with bucking. I can’t tell you what inner barrel but I do know it’s a tight bore barrel. I believe it has a 120% recoil spring and a 4.3 guide plug (gold as well) gun shoots great and comes with a primary airsoft m4 adapter. 2 midcaps come with it. I do have a tank, line, and reg for sale if interested. I cannot find my tlr so it will not be included I AM NEGOTIABLE