This MadBull Noveske Barrel Nut for Gas Blowback rifles for WE, G&P, and WA will not fit your usual AEG. You can always get the same thing by checking their website that will fit the M4 AEGs based on the Tokyo Marui brand... "Since too many users ask, we decide to release limited quantity of barrel nuts for WA, WE and G&P. Each item is made of steel and CNC processed."