Now for some upcoming treats from the Taiwanese airsoft upgrade parts maker, RA-Tech as they send us a link to a video showing their WE M16 Steel Bolt, Steel Slide for the KSC G17/G19 gas blowback airsoft pistols, and the Recoil Kit for GHK. See the video below, it's an interesting thing to watch. You can check more upgrade parts for the gas blowback products at their website.