AA Store have FCC 4167D complete rifles and conversion kits back in stock:

Now available to order again at the AA Store: FCC 4167D Complete Rifles & Conversion Kits (worldwide very limited quantity)

FCC 4167D Complete Rifle (Speed Version) – EUR 2244 / USD 2949 / GBP 1889
FCC 4167D Complete Rifle (Torque Version) – EUR 2259 / USD 2979 / GBP 1899
FCC PTW 4167D Complete Conversion Kit – EUR 749 / USD 989 / GBP 629

 https://www.aa-store.at/fcc