Too cheap to buy the factory made stands and hangers. We just hang steel plates from re-purposed items. The low targets are hanging from the side brackets of an old walker. The 2 higher square targets are hanging from a 3/4 inch gas pipe that we bent a 90 degree bend in.
They all go "ding"...
first hand experiences with this gentleman.... wonderful person with top quality work
https://www.theoutdoorstrader.com/threads/fs-nw-georgia-nfa-engraving.1338720/
The parts are readily available on eBay. Just search do a search for beretta 390.
I love playing with beretta shotguns... How much did you pay for it? May be I'll buy it from you.