The latest video from RA-Tech showing their products in tests. The first part of the video is their test of their custom KJ Works KC-02 Sniper Version that is kitted with custom wood work with new hop-up rubber and used with 0.4 bb with green gas. The second part is the custom KSC M4 gas blowback rifle with precision inner barrel and used with 0.3bb with green gas. Check the results in the video below: