The Safariland 6004 cut for the Beretta M9A3, in SLS and ALS. Typical price $35 to $95, median $42. Almost none of these are cut for a weapon light (0%), so check the listing if you run one. 67% are left-hand and 93% are used. Ships flat $7.90 from Iva, South Carolina, Mondays and Thursdays.
The 6004 is the double-strap tactical leg rig, and unlike the 6005 it has no quick-detach buckle to drop the rig off your belt; the holster mounted on it is usually a Level 2 6280 or a Level 3 6360. These are the ones cut for the Beretta M9A3. Mostly black, with some Green, Tan and OD Green, in STX finish.