The AR15 is hard to beat for a close to mid range weapon. There are so many choices and parts for them that they can be set up almost any way you want.
Other choices are FAL, M1A, HK91/G3, AR10 for longer range.
Short range would be an AK47/AKM, SKS, CETME.
Of these for long range I\'d go M1A or FAL, mid range a AR15 rifle or carbine and for short range an AKM. Find friends that have the different models and try them out to see which type fits you best.
Most important is to know the good points and faults of your choice. These may be a gun is too long or powerful for urban work, too short for rural ranges, rounds for it not flat shooting enough, rounds lack wounding power at long range, etc. After you get it make sure all your mags work (AR\'s are bad for this), you sight it in and know where it shoots and that it\'s reliable and jam free for hundreds (at least) of rounds. After all this then you can call it a tactical rifle.
