Probably many of you have heard of this by now since it was introduced early this year. For owners of the Tokyo Marui AKM Gas Blowback Rifle, they can check the Real Power Airsoft Tokyo Marui AKM GBBR AK Steel Kit if they want to uprade the metal parts of the rifle. The package consists of a full metal receiver and barrel with a muzzle device and sight. This is available at reputable sellers, mainly in East Asia, right now.