dud learn how the game is played. Overkill and Stopping Power are in the same perk tier, Tier 2. Not faulting you for not knowing the M1014, but it's semi-auto. Big difference. It's not a laser, its a Red Dot Sight. Sorry but i really hate people who think they're good at the game and can't get that stuff right.
My favorite classes: Sn1p3z: M21-no attachment P90-Silenced Claymores Overkill Iron Lungs
This is a good set-up for head shot, sub in any sniper, i just like the M21 the most. If you don't have the P90, the MP5 or Mini-Uzi will work, and the Silenced M4 will work as well. Silencers are key to this business though.
Search and Destroy: M16-ACOG USP .45 3x Frag Stopping Power Steady Aim
Steady Aim helps in CQB. USP is much better than the Deagle, and 3x frag for quick and safe kills. Switch to Bandolier, and you have a completely pwnage class for defending C on Pipeline, or for using on Countdown and Strike in General. Also works on Backlot to an extend, although there's more CQB there. You can use this to effectivly protect B on Ambush as well.