If you have been wishing for a gas blowback versionn of the MK18 Mod 0 rifle, GHK has granted your wish with the release of GHK MK18 Mod0 GBB Rifle. Many like the gas blowback system of GHK and this one is a good seller as well. This has licensed Colt and Daniel Defense markings and comes with 40-round GMAG-style gas magazine. If you can't find it retailers in your area, visit the Airsoft Taiwan online store as they have it in stock.