I have the CQB set, as MichelK says, the belts aren't very good, but overall it has a lot of gear that you can use separate with diferent bashes or together with one single figure.
the good things:
Vest, BDU, boots, kneepads, shotgun shells, radio, gloves, m4.
not so good:
shotgun, glock, ammo clips, helmet, belts, pistol holster, balaclava, elbow pads.
Also, it looks better with bigger bodies, such as hot toys.