Amazon has a fair few options made from different materials, I only currently have 1 pistol on display and for that I just used a basic clear acrylic stand made by HFC (one of SMKs import brands), was only about 4 quid and has held a fairly heavy Beretta rep fitted with a laser and mock suppressor fine for quite a while now.
Some Airsoft places might have bulk deals on them (as HFC is an airsoft manufacturer but a stand is a stand) so worth having a search.
You'll Shoot your eye out Kid
Currently looking for an SMK/BAM B4-4 Rear sight or help modifying current one.
WANTED Anschutz 275 mags