The The BIG St. Louis County Gun Show will be held next on Oct 20th-22nd, 2023 with additional shows on Apr 19th-21st, 2024, Jun 21st-23rd, 2024, and Oct 25th-27th, 2024 in Fenton, MO. This Fenton gun show is held at STL Athletic Center and hosted by BK Promotions. All federal and local firearm laws and ordinances must be obeyed.