These SAS soldiers utilize a sniper rifle instead of a machine gun. It's a good idea to keep them high up where zombies can't reach them.

The Upgrades

Path 1: M24A2 ($600 in-game cash),

L96A1 ($1200),

L121A1 ($2000),

RT-20 ($5000),

M.A.D SYSTEMS ONE-POINT-OH ($25000, Must unlock for 400 SAS dollars first.)

Path 2: Free Float Barrel ($200),

Rapid Reload ($250),

Hard Case ($500),

Stimpack ($1500)