Designed using advanced 3D Computer Designs and constructed from high quality T6 Aluminium, the Madbull M4 Upper and Lower Receiver is a bang up piece of hardware. Fully licensed markings and authentic trademarks sets this series of Madbull Metal Bodies aside from the rest of the industry.
Madbull's metal body feels exceedingly solid and with the deep CNC engraved trademarks pushes this upper and lower receiver set to the forefront of the Airsoft industry. Compatible with standard type 2 gearbox AR / M4 family AEGs, a Madbull body is a good place to start when putting together an AEG of your own build. Look around as Madbull makes bodies with all sorts of different markings and design tweaks.
Whats more, it comes bundled with a Madbull Ultimate hop-up unit (worth US$40 in itself) which makes that custom build a little easier knowing you have a hop-up unit that will fit that metal body for sure and a good one at that.