The M10 helmet is constructed from a similar layered composition to the M3 Pattern Personal Armor, consisting of outer layer of titanium-alumide alloy, a core of boron carbide resin bonded to a layer of graphite-composite carbon fibre and a woven Venlar liner. While offering little protection against direct hits or strikes from high-velocity or armor-piercing ammunition, the M10 will readily withstand hits from less powerful rounds, glancing blows and grenade or artillery fragments.
The helmet incorporates the individual Marine's Personal Data Transmitter, consisting of a PRC 489/4 transmitter that broadcasts the vital statistics monitored by his or her M3 armor vest to the tactical command center, and also features a full-motion video camera, audio microphone and an Identification Friend Foe (IFF) transmitter. In addition, the helmet also mounts a passive infrared sight that flips down over the right eye when in use. This sight displays infrared images from the thermal imaging facility built into the tactical camera, superimposing them over the background as a head-up display.