EMG TTI Licened M4E1 Aero Style CNC Aluminum Ultra Light Upper & Lower Receiver Conversion Kit for Tokyo Marui M4 MWS GBBR Series (Limited Edition) (By Angry Gun) 5Inch BW-CG-TB815 Manufacturer FMA Major Color

BW-CG-TB815 Manufacturer FMA Major Color Desert Edition Major Built Material ABS Size M/L

metal hop up unit and a reinforced pinion and bevel gear via MIM process

King Arms COLT M4 RIS Gas Blowback Rifle  Adjustable Power & Rate of Firing  Crispy Metal Sounds & Smoother slide cycling  COLT M4A1 Features:  Cybergun Official Licensed Engrave Logos / Laser Markings throughout the gun  COLT Metal Receiver (Easy Disassembly)  Aluminum Alloy RIS Rail System Handguard  14

Beautiful M4 Upper and lower receiver for WA M4A1 Series

you can choose a longer barrel  If this one is not suitable for you

EMG TTI Licened M4E1 Aero Style CNC Aluminum Ultra Light Upper & Lower Receiver Conversion Kit for Tokyo Marui M4 MWS GBBR Series (Limited Edition) (By Angry Gun) 5Inch BW-CG-TB815 Manufacturer FMA Major ColorEMG TTI Licensed CNC 6061 T6 Aluminum Matt Black Anodized Coating Integrated Trigger Guard Upper & Lower Receiver x1 Steel Forward Assist x1 Steel Dust Cover x1