KWC UZI with AEG Inner Barrel? Possible

This is my latest work, KWC UZI with madbull 6.01 300mm inner barrel. I do this to improve its acurracy and range. I'm planning to convert this to greengas (gas adapter is on the way) and use this in open skirmish area. Here she is:

I haven't decide to cut the rest of inner barel or use sound suppresor instead.
With co2 , 0.3g madbull bb it has 450 fps, with stock inner = 350 fps.
 Range ofcourse increase, but i havent test its accuracy yet.

 I already documented steps how to dissambly the the hopup, i'll write it as soon as possible.