D|Boys BY-032 - M4 AEG with Metal Gearbox in Blue 0 4 23 Jan 2021 10:44 BB Guns UK D|Boys BY-032 - M4 AEG with Metal Gearbox in Blue This is the D-boy high performance M4 BY-032. The BY-032 has a Polymer body and metal Gearbox. 1/1 Scale High Performance Assembled Electric Powered Airsoft AEG and comes with a..Price: £79.95