those Hueys aren't Vietnam Hueys... those are Venoms which were made many years later. Hueys in the 60s were two bladed both up top and the tail rotor and it had only one exhaust not two... it was the two bladed rotors that gave the Huey it's iconic thump sound as it flew. the quad rotor made it not as noisy
The 7.62mm Minigun was a rare sight in Vietnam. The problem was that they tried to scale down a full sized M61 20mm and ran into a lot of issues on the helicopter mounted version. The gun has reliability issues if it couldn't get the power it needed at the amps needed which wasn't a problem for large aircraft. That and the cost are why the vast majority of helicopters used the M60 as a door gun and the duel mounted, pilot controlled version on the gunships. A thin skinned Huey with underslung, gimbled miniguns is a hell of a pipe dream and something you would NEVER see. On a side pod in a fixed mount? Sure. Huey's were VERY vulnerable to ground fire. An AK47 would have no problem punching through the windows, floor, or sides with ease. The pilots all wore heavy early ceramic rifle proof plates on their front and back. Often they mounted them under the seat too.
A Hind? A fucking HIND?! 7.62mm would bounce off of that thing like it was nothing. The Vietnamese didn't have any of those. That would show direct Soviet involvement. If they did have any those thing would have torn our troop apart. They would have made easy prey of ANY Huey out there including the gunships. Only the Cobra had a chance and that's only if it has the wing mounted 20mm or (at the time) experimental nose mounted 3 barrel 20mm kit. Even .50 BMG AP rounds have a hard time bringing a Hind down.
One thing I hate about COD games now is how quite and dull everything is... incoming fire just sounds dead and flat as if they've purposefully made them sound shit, in post editing walking around the FOB sounded lifeless, there's Cobras flying overhead, logi trucks whipping about, Huey's taking off and grunts all around shooting the shit, but all you hear is nothingness, absolutely kills the game immersion in my opinion.
Waiting for two soldiers to show up, salute and say “Morning, sir!” and hear the officer say “Get your god damn hands down! Snipers all over the place that would love to wax an officer.” (Forrest Gump)
Don’t you just love it when the game makes it very obvious when it’s taking control away from the player with the awkward and abrupt jerking putting you into the perfect position for the cutscene?
the choppers have 4 blades on the main vertical lift rotors, but the hueys had on 2 during the Vietnam war. With that said, the Bell 412EP helicopters where the first to have 4 main rotor blades which came in production in 1981, so their about 12-14 years ahead of schedule.