Sniper 3

Sniper 3 DVD cover.

Movie (2004)

Starring:
Tom Berenger (Master Gunnery Sergeant Tom Beckett)
Byron Mann (Detective Quan)
Denis Arndt (CIA Director Bill Avery)
John Doman (Paul "Finn" Finnegan / The King Cobra)

Deadly sniper Tom Beckett is recruited by the CIA to go to Ho Chi Minh City and take out a ruthless drug dealer who turns out to be an old war buddy he thought was dead.

Also from this series:

Sniper (1993)
Sniper: Ultimate Kill