The Patriot Kit (Long Version) from Madbull Airsoft, is rather neat conversion kit for the Marui M4/M16 series. (Requires modification to the host weapon.) Made from high grade aluminum and with a Matte Black Oxide finish, it converts the standard-look of the M4 into a cool-lookng CQB AEG.
The kit includes a barrel, "Knock-Down" flash hider, mock gas tube, rear sling adaptor, short buttstock and chequered-grip handguard. A Nunchuk Mini Battery can fit into the handguard, a G&P 9.6v 2200mAH V-type battery can be used (code: GP344).