15k point upgrade - Silent Headshots. Self explanatory, allows you to be more covert by making your targets not inform everyone within a 5 kilometer radius that their head has been blown off
My first thought is that this seems a little overpowered, particularly when used in combination with the colt or even the deagle. I think it would be cool if this is a perk for the silenced pistol though, and maybe include ACTUALLY silencing the pistol part of the upgrade.