With the release of the RA-Tech Aluminium Nozzle for the WE AR Gas Blowback Series, they now take you range and FPS test in their latest video. This test will try to show you what it can achieve given the legal fps limits in countries by adjusting it. The results show that the FPS can be adjusted from lower to higher limits, ensuring that it will be able to meet player and legal requirements.

In this second video, they also show the RA-Tech Slide and Outer Barrel Ste for the WE Glock 18C Gas Blowback Pistol and their new spring for the VSR-11:

The second video, of course, is from their online airsoft store, Airsoft Taiwan, which covers the KSC HK45 gas blowback pistol. I'll have to say that the markings that show the Umarex licensing actually put me off. It would have been better if it could've been inside the slide. But that's just me.