This text is straight up copied from one of the previous post's comments section.
Current TTK system (or maybe the hit-reg system) has rendered low rate of fire weapons like the SCAR and FAL useless because sometimes you need 3 or more hits to kill a person but with such rate of fire you can't just do it in time -- the person you are shooting at can change his movement direction, turn around and kill you in a blink of an eye with his M4 just like in CoD.
I have played just 7 hours of Beta (and 25 of Alpha) but I already had multiple situations when I started to shoot an enemy with my FAL or G3 and had hit him like 1 or 2 times and after that he just turned around and killed me.
I understand that you, the developers, want to get rid of massive loads of bush camping the previous game might have had, and I entirely support that decision, but why do you have to make people literally sonic-speed bullet sponges? You can make it so at least every assault rifle (let's discuss SMGs later) can kill anyone in 3 hits maximum. You can even lower that to 2 hits for FAL and G3 (arguably, the AKM too) for the cost of highly increased recoil and/or weapon sway (just like in the Alpha!) because both rifles utilize high caliber ammo and have a low rate of fire.
Just don't cross the line like in Insurgency 2 where an old pistol like PM can be even more useful than a modern fully-modded assault rifle. For example, make pistols kill people in 4 shots when they have full HP but kill those who were injured in 1-2 shots, because you often draw your pistol when out of ammo to quickly finish off some bad guy which you already were shooting at, not to straight up rush an enemy position with it and kill everyone daring to defend there including heavily armoured enemies.
Personally, I liked the Alpha FAL and G3 very much. These could one-shot an enemy if he had no armour at all and as I remember could kill anyone in 2 to 3 shots no matter what armor they used. And that was fair because they had MUCH higher recoil and were MUCH MORE harder to control and almost impossible to spray when not in a close quarters battle. I used these a lot and absolutely loved them. I felt like my skill and aim were rewarded when I successfully eliminated 2-3 enemies in the adrenaline-pumped hurry of a building assault.
One of the biggest problems in Alpha was the extremely low movement speed and overall sluggishness of the game. But now when the pre-order Beta is out that is mostly fixed. High movement speed generally helps make the game more lively and less of a camper swamp. The low TTK even helps active fast-moving playes fight the campers because they can constantly change their position, suppress, circle and finally punish the camper.
Also the MP7 is absolutely useless now. Even more so than earlier. I mean in Alpha (after the MP7 recoil got fixed) it was a viable close quarters assault weapon and now it feels like you need to put 5 bullets in a man with it to kill him. What the heck?
Important to note -- Uzi is even worse than MP7. It seems to have around the same damage but a much lower fire rate which makes it obsolete comparing to MP7 or AKS-74U.
I have to disagree with about your entire post.
If we take into account military training, regular soldiers are trained to just shoot the target. Sometimes you train them for the pelvis, more rarely the belly and even more rarely the head. The truth is that soldiers don't have the luxury of nit-picking which area of a target they're shooting at in live combat situations. So training is just about pointing your gun in the right direction and shooting accurately enough to supress a real target in combat. Then sometimes the soldier get lucky and lands a hit at whatever parts his target had exposed. Most killing in war are made by artillery, bombs, shells. Not so much about small arms fire.
So from the get go, insurgency cannot be considered a realistic combat sim game. And, most important and foremost, it's not fun for the player to not be able to kill his targets reliably. It puts chance before skills and never makes you feel rewarded or accomplished for working hard on mastering the game. As other players have pointed out, you cannot take on a group that has the numerical advantage on you because of this time to kill.
If the game is not made for a player's enjoyment, then very few will buy it. I'd hate to see NWI going bankrupt for making this mistake.