Operation Remembrance is a massive expansion and realism mod for EA's Battlefield: Vietnam. Operation Remembrance has been created by Denal Douglas, a private mod-maker, and has been in the works for almost nine years. It adds dozens of maps, small arms, weapons emplacements, aircraft, land vehicles, and naval vessels, as well as significant improvements to the AI, making singleplayer more fun and more challenging.
I received complaints about the iron sights for the M16 and L1A1, so I decided to take a shot at fixing them for the upcoming V1.1 patch.