WE do a good gas Glock. I think KJW do a CO2 version for theirs but Im not a Glock fan. Others will know better.
Re yr dad - No possession of firearms licences have no bearing on Airsoft weapons.
I assume you are under 18. Your dad would need to play three airsoft games in over 2 months to be able to get the 6mm BB pistol sold to him in its RIF black livery.