I used to use the AUG because I loved the hybrid feel of the scope and you could use it on modded or vanilla. I strictly use the AK-47 on both now. M-16 on modded used to perform differently and now it’s the same as vanilla. Use the AK. It’s great for close body, and you can pop some serious damage from across a map if you can control the recoil. Just don’t expect to compete with a ranged rifle.
Galil, I think the HK SL8 but I can't remember the gun so maybe not this one. If it is the one I'm thinking of, its a semi and literally takes one headshot to kill. I suck at aiming so I don't capitalize on this often. The winchester as well, but not the shotgun variant. On good days I can one shot headshot people if I aim correctly.