I am intrigued by the gnurled bit on the end of the muzzle brake, is that just aesthetics to match the filler cap .
FTP900 MTC connect,Welhamanium internals -sorted
HFT500, ACZ stock MTC connect
TX200 Mk3 CS1000 stock, hawke vantage sf , Nick G internals
Steyr ?, maybe , they cant all be wrong?