I used UZI, MK18, G36K, M4A1, AKS-74u, and other short weapons to see the recoil.
They were higher than expected. Even in small caliber.
The crouch/prone recoil have no problem, but stand recoil have alot.
Also, semi-auto is not great than auto in stand up.
If I shoot SKS, then first bullet goes, gun goes up, and sinks down to 1/4 of original shot. If I semi-auto shoot 5 bullets in SKS, then I have to drag down individually by each shot. If I auto shoot, then I can just drag the gun down.
Maybe increase vertical recoil when people shoot fullauto about 10 - 15 bullets in 5.56 or 5-15 bullets in 7.62. Maybe Increase gun sinking in semi-auto.
Firearm should have overheat problem if they don't have fore-grip or bipod.