in my opinion famas is a very great choice. Most of the creeks can be fixed with tape like bob said. As for Rate of fire and range, the gun performs well on both fronts. Its long barrel is perfect for long range attacks where as its small design makes it perfect for cqb aswell. Its rate of fire is perfect for support fire but shooting at 17 rounds per second will require atleast 2 hi caps if you do want to be support gunner. If you want more info on upgrades for the gun just visit this site
http://airsoftfamastech.jconserv.net/index.php. Just beware you will needa know what the hell your doing with a v1 gear box if you plan on upgrading the gears and such