RA-Tech KSC M4 PTS Custom Video
OptimusPrime
28 Feb 2012
New video from RA Tech showing a custom KSC M4 Magpul PTS Gas Blowback Rifle that is kitted with their own upgrade parts. They have also this universal fps adustment tool that allows you to adjust the FPS, and in the chrono tests as shown in the video below. The results in the video are impressive. Watch the video to learn more about this.