[QUOTE=Josie & John;7973020]Hi Bill,

Do you know if both .177 and .22 Mk7s were prefixed with QF?

Kind regards,

John[/QUOTE

Hi John sorry not sure with regards to the mk7 prefix. I suspect that it is the same for 177/22 but as I say not sure .Maybe someone else with more info may chip in.
Regards Bill