Simply Aritz presents his gas blowback in detail, externals and internals wise... "The best Airsoft GBB replica on the market, but x3 hahaha, seriously though, Marui's systems, both the z-system and the one they have for the ak (not necessarily official Marui systems) have proven to be the best in performance right out of the box. Although I'll soon be bringing you VFC replicas and others from different brands, we're starting this year's GBB video series with my three MWS rifles. Very soon, I'll have some news and updates on AKs, both Marui and VFC."