MBU-5/P oxygen mask- Used by the US Air Force for many years in tactical aircraft like the F-4 Phantom and F-15 Eagle. Our MBU-5/Ps are used excellent condition and complete with offset ""J"" bayonet clips, 3 pin connector at end of hose, and M101 microphone. CX-4707 communications cord shown in photo is not included unless selected from the available communication cord options. If using mask with civilian impedance radios, please choose an amplified cord. Display Use Only.