Bianchi Cobra, UM92 series, Lawman Leather Goods...
For a tanker or shoulder holster type nylon rig, you may want to see the Bianchi Cobra line;
www.Bianchi-intl.com . Bianchi markets & sells the M12 & UM92 milspec or GI type holsters.
The Cobra system allows laser-aiming systems & white lights but I'm not 100% if the Bianchi military gear works with the Cobra models the same way.
You might also see;
www.LawmanLeathergoods.com . The treated black leather STU shoulder holster may be available as a custom design for a M9a1 pistol with a laser/white light.
NOTE: check with Lawman's order status or delivery time first. The company has a few online complaints but they also have many + gun press reviews for the STU holsters.
Safariland may also have polymer ALS holsters with light attachments but I don't think they sell a shoulder holster for the Beretta 92FS or M9a1 pistols.