For those who are not aware, WE Airsoft also does OEM work for Umarex and they did produce a G3A3 Gas Blowback Rifle. This has full steel stamping press body, plastic stock with an initial muzzle velocity of the 450 fps on 0.20g BBs, and comes with a 30-BB round gas magazine.

Just click on the play button to as the video is still there.