They probably won't last long.. $490
Aero Precision Complete Upper (no BCG/CH)
https://www.aeroprecisionusa.com/m4e1-threaded-16in-556-m4-complete-upper-atlas-rone
Looks like they still have black in stock
Aero Precision Complete Upper (no BCG/CH)
https://www.aeroprecisionusa.com/m4e1-threaded-16in-556-m4-complete-upper-atlas-rone
Looks like they still have black in stock