We missed this post at the end of May 2014 by champion Japanese Shooter, Mach Sakai, in which he reviews the limited edition Hephaestus HTs-14 Gas Blowback Bullpup Rifle designed in cooperation with GHK Airsoft. He enjoys the blowback of this compact rifle and he says lucky are those who got this limited rifle as it is a rare item in terms of gas blowback rifles being a bullpup one.

You can read the full review here which is in Japanese and below is the video compliment: