hi, im wondering what aeg has the most possible upgrades. From any kind of weapon; be it an SMG, Assualt Rifle, or even a sniper or LMG to what goess on in the weapon from the motor types, gears, barrels, and etc. Ive talked with some friends and people at gearbox about all different kinds but im still not sure. M14's and MP5's seem to look like the best possibilities but I just need to know what else there can be.