I went to Gen Con this year in Indianapolis, and among the vendor booths I found several which sold warhammer 40k weaponry. (One was "Forged Foam", the other I forget the name of) The booths had Chainswords and Power Swords, but nothing resembling 40k ranged weapons (bolter, las pistol, etc). When I asked a clerk they said they didn't/don't make those and basically nobody does.
I thought that couldn't be right, but wandering the Con and some basic google searching shows that there are no official resources for 40k prop ranged weapons. The only recourse I've found is to make your own. Speaking as somebody who doesn't have a lot of experience with modding, painting and generally altering Nerf or Airsoft guns, I find it a bit daunting. It's also confusing because surely I'm not the only 40k fan who's asked about or wanted this and it seems like rather large spot for a business to overlook.
Am I really the only one who at least wants the option of buying a costume laspistol/lasgun rather than trying to slap one together?