Hi Bill,
The gun looks great... as the others have mentioned, a testament to your modelling skills.
Let's just hope you get the chance/opportunity to display it in all its glory on the Battle of Britain 80th Anniversary Display at Scale ModelWorld (Telford) in November...
(... along with all Dave's vehicles and buildings!)
Then there's the 90cm Searchlight, range/height finder, generator, and truck to mount it on, and the crew...
... it's a never ending project Bill!
Power to your elbow,
Biggles