Donguk Seo gives us a good review of the Lambda Defense MK48 Full Steel AEGs available at SWAT Model Korea. This AEG is made in Taiwan and weighs 8.5kg when it is unloaded with most of the AEG is made of steel externally. It has hardened stainless gear, 5,000-BB round auto winding electric box magazine, tri-rail system at the front, and Lambda Defense collapsible stock. It is available in Mod1 and Mod2 versions.