Playing "Pistols Only" or "No AWM's" is fine, but if you want to play that way, make sure people on YOUR team are abiding by those rules.
If someone on your team tries to AWM me, don't expect me to refrain from using their gun after I kill them (this means you, Optical Rage).
There's nothing more hypocritical than not saying ANYTHING to people on your team using those weapons and then whining when someone on the other team does it. And don't even pretend it's not completely obvious when someone on your team in using a forbidden weapon (that's what those little icons in the top right of your screen are for, not to mention the sound of the AWM carries completely across the map).
(This isn't directed towards you, Croton.)