So,
one of the additions of the new pack are the "WCG Packages".
There are three packages at the moment.
They all includes 5 weapons and you have each weapon for 7 days.
One package with each 5 weapons and each weapon for 7 days costs 20k GP.
Package A includes a M60-WCG, SG552-WCG, M4A1-WCG, Colt1911-WCG and a WCG-Grenade.
Package B includes a XM1014-WCG, AK 47-WCG, MP5-WCG, Desert Eagle-WCG and a WCG-Smoke Grenade.
Package C includes a AWM-WCG, Steyr AUG A1-WCG, P90-WCG, WCG-Axe and a WCG-Flashbang.
Here are some pictures: