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 metal hop up unit and

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

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

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

50cal (caliber) IP Standard IPX4 (weatherproof) Shockproof yes Fog Proof no Lens Coating AR red Mount Type Weaver/Picatinny Battery Type CR123A Battery Life (high)180 - (low)2000 hours Battery Voltage 3 V Operating Temperature 0 to 120 F Length 4

AK47 Real Wood EBB Rifle (ASK 206)

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 metal hop up unit andEMG 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