WWTM15 Searchlight Battery in Irregular's 6mm WWII range
For Anti-aircraft guns there's WWTB56 3.7" AA gun and crew, but this is obviously a proxy for anything German!.
For German flak however the 88mm and crew from Irregular is in anti-tank mode, and Scotia don't do a ground mounted flak model so you could look at Navwar's slightly smaller scale flak models:
link
&
link
(bottom of page on first link, and top of page on second link)
Or the flak guns from GHQ's range:
link
though again the photo on the GHQ site shows the 88mm Flak without the barrel sticking up in the air.
I'm sure there're others I've missed.
What are the other things you're after?
Cheers,
Martin