Purpose of the SAS mod is to give a completely new look at SWAT 4 fixing, where possible, the main game bugs and introducing new features. The SAS mod improves SWAT 4 gameplay looking at weapons, equipments and tactics of the real 22nd SAS Regiment.
The full version of the SAS MOD v1.1 For all reference (Installation, Modifications, Credits etc) check the documentation files. Make sure to read the FAQ section in the wiki page BEFORE posting questions please! ;)