Comes with all the following parts:

W&S steel internals
W&S Full travel bolt w/ 2-stage recoil rod (Faster ROF whilst maintaining full travel)
Hephaestus 1p steel trigger, much nicer trigger feel
Hephaestus steel outer barrel
B0bbly Aluminium hop unit (best on the market) + Modify X-range bucking
Hephaestus rear right rail
RS Bakelite grip, feels fantastic!
and of course, the magazine

This model has NO QC ISSUES, making it a pleasant gun to shoot and work on.

Slight issues:
Slight scratches on handguard, some wobble that needs shimming
I've encountered the occasional 2rd burst on semi, which is because the disconnector spring is tired, will include 3 replacement springs with the RIF.

Shipping and fees are included in the price, all safe n secure through G&S

Can send shooting videos upon request!