Head: Police Force
Torso/Waist: Recondo
Arms/Legs: Ambush (v1)
Gun: Chameleon
Backpack: Accessory pack

I found a haul of "Police Force" figures by Chap Mei at my local Big Lots. The bodies are completely incompatible with Joes, but the heads work perfectly. The two-tone paint scheme looks really sharp on this guy.