FBI HRT and Regional SWAT haven’t used the SA PRO in several years.
SWAT Agents with grandfathered Personally owned PROs can still carry them during normal duties but they are no longer issued or approved for SWAT use. They were replaced with green framed Gen 4 G17s with factory minus connectors prior to the FBI’s general transition to 9mm.
HRT operates on Fight Club rules but allegedly they went to G22s then 17/19s long before the rest of the Bureau and are currently running 9mm Glocks with red dots.
Other DOJ special units also used or allowed SA PROs off theFBI/DOJ contract. They have been replaced with 9mm Glocks, some with red dots or in the case of USMS, 2011s with red dots.