There's a thing called your secondary weapon.  It's what you should be using when you are forced into close combat.

Aim Assist is not stronger on the sniper rifles, it's a universal part of the game and it is impossible to increase or decrease it for certain weapons.

Hence why you follow these steps

1) Find a decent vantage point where you can line up some good shots; outside of any high-traffic areas/spawn points is a good start. Improvise these places whenever possible (e.g. the tilt-a-whirl on Carnival, behind the cubicles on Highrise)

2) After getting 2-3 kills, change positions; immediately pull out your sidearm and haul ass.

3) ALWAYS be aware of your surroundings. Don't be completely focused on what's in front of you; keep your eyes and ears open for any changes in your immediate surroundings.

You're talking to someone who can sit behind the coffee counter on Highrise and get a 20+ kill streak. Real sniping is not that hard if you know what you're doing; the only maps I didn't find to be good for sniping were Vacant and Trailer Park.

Exactly; it SHOULDN'T be. If you guys can headshot me w/out fully scoping in, then I should be able to headshot you from 40+ feet with a SPAS/Striker. It's only fair.

Come on, does that really make sense?

M16 has an effective range of 800 meters, thats 872 yards, the M40 effective range is 1000 yards, the M16 is not far off