This sig 320 m18 has finally came together with tlr1 hl, rmr, gas pedal and WC grip. Apparently holster compatibility with the gas pedal is a problem. Tier 1 concealment and trex holsters don't work with it. I have found 2 companies that do. 4 brothers being 1 and I believe werks was the other. Of the 2 I'm leaning 4 bro even tho I need 2 of them at almost $100 each after taxes shipping etc. If you are running a 320 with the gas pedal what holster are you using? I'm looking to get 1 iwb, and 1 compatible with safariland