TM 1-8415-216-12&P
i. Cowling for MBU-12/P Oxygen Mask (Figure 2-7). The MBU-12/P oxygen mask at-
taches to the AIHS via bayonets (1) inserted into bayonet receivers. The receivers
are mounted below the visor tracks on both sides of the helmet. The receiver place-
ment on the helmet is custom-fitted to an individual’s face, ensuring the best possi-
ble fit. (Bayonet receiver attachment procedures are detailed in Chapter 4.) A
graphite cowling device (2) is attached to the oxygen mask to increase the offset an-
gle of the mask straps to the helmet. The increased offset angle improves retention
of the mask to the helmet. The visors on the AIHS helmet have been trimmed to con-
form to the contour of the MBU-12/P mask.
Figure 2-7. Cowling for MBU-12/P Oxygen Mask
2-6
