Breakaway Elastic Retention System – B.E.R.S. is a product that was designed for operators that did not want an active retention holster; that could be run as a level 1. You can simply stow the elastic behind the holster when not in use. It has a velcro interlock that can be broken by a sharp draw of the gun. This is a very niche product that was developed for a specific purpose and use. It is currently in use by the USN, and UK SOF.