a new version of true combat has just been released. it's still very much a beta, but well worth the download.
true combat is a mod for enemy territory and as such, you'll need the latest version of ET before this'll run.
screenshots (mostly of the maps)* tactical-teamplay oriented, modern-world combat simulation
* realistic weapon behavior simulation
* iron sight aiming system, no crosshair
* sophisticated ballistic simulation including multiple-layer object penetration
* professional mode: 1-life, short-timed, objective driven scenarios in realistic environments
* bodycount mode: team deathmatch style, gametype to relax?
* balanced, team specific set of real-world weapons (Beretta 92, Glock 19, Ump45, Mac-10, M4, Ak-47, and more)
* rich, deluxe graphics, based on high-resolution digital-camera shots
* lag compensation, client-side bullet prediction, punkbuster support
* immersive and lethal, fast-paced action"
http://www.truecombatelite.net/gallery/