One of the early airsoft gas blowback rifles in the market, the GHK G5 GBB, has been available for years and you can find it black or tan at Evike.com... "Established in Taiwan in 2008, GHK began as the leading manufacturer of AK style gas blowback rifles. In the intervening years GHK has grown to become one of the most highly regarded GBBR manufacturers in the industry."