E&C M16 A3 AEGE&C M16A3 AEG Full Metal Electric Airsoft Gun Works with Standard TM compatible M4 M16 AEG Magazines Robust Construction Classic Design with A2 polymer handguard and removable carry handle Stable FPS (~400FPS) Quick Change Spring system Version 1 Rotary Hop Up Adjustment BLANK receiver without any markings (Ideal for laser engraving!) NOTE: This is a custom built rifle and does not come with an original cardboard retail box.