Exchange for jewels

Yeah, i know that someone spending 24|7 time farming new ZM maps, but what i propose is to let exchange AK-47 Buster and M4 Laser on Lv1 for jewels, because there is no other deal for them as they just filling your storage, especially if you have lv2/lv3 ones.

Implementing it in that way will be much easier than checking "is it double or no".