The Advanced Combat Helmet (ACH) is a modular system that weighs less, fits better, and is more comfortable than its predecessor, the PASGT helmet.

The Enhanced Combat Helmet (ECH) was developed in response to a 2009 USON to produce a helmet that providesballistic protection from selected small arms ammunition andfragmentation, yet maintains all other characteristics of the Marine Corps' Lightweight Helmet (LWH) and the Army's Advanced Combat Helmet (ACH).

The Lightweight Helmet (LWH) replaces the PASGT helmet.The LWH provides protection in various operating environments from fragmentation and 9mm small arms projectiles.

The Modular Integrated Communications Helmet (MICH) began development in 1997 as part of the Special Operations Forces Personal Equipment Advanced Requirements program at the U.S. Special Operations Command. The MICH provides the Special Operations Forces the flexibility to tailor the communications capability of the helmet to the mission using one modular system.

The PASGT helmet is intended for use by ground troops and parachutists to provide ballistic protection from fragmenting munitions to the head, temples, ears, and neck.

Technical manual 08744B-12&P covers the basic fitting and use instructions for the Marine Corps Lightweight Helmet.

Technical manual 10-8470-204-10 covers the basic fitting and use instructions for the Advanced Combat Helmet (ACH).

Technical manual 10-8470-211-10 contains operating instructions and maintenance procedures for the Enhanced Combat Helmet.

Commercial item description A-A-55253 covers the requirements for a pad for parachutists to use with the aramid (Kevlar) helmet (MIL-H-44099, Helmet, Ground Troops and Parachutist's) to provide impact protection.

Commercial item description A-A-55299 covers the requirements for an impact liner for the parachutists to use with the aramid helmet (MIL-H-44099, Helmet, Group Troops and Parachutist's) to provide impact protection.

Military specification MIL-C-44107 covers a ground troops-parachutists helmet cover.

Military specification MIL-H-44099 covers a ballistic protective helmet consisting of a laminated coated aramid cloth shell with a replaceable suspension assembly, headband, and chin strap.

Military specification MIL-P-44081 covers the requirements for a pad for parachutists to use with the aramid (Kevlar) helmet (MIL-H-44099, Helmet, Ground Troops and Parachutist's) to provide impact protection.

Military specification MIL-S-44022 covers a helmet retention strap used by parachutists with the Ground Troops'-Parachutists' Helmet (PASGT).

Purchase description AR/PD 10-01 covers the requirements for the ballistic protective Nape Pad which provides ballistic protection to the area below the Advanced Combat Helmet and Enhanced Combat Helmet at the nape (back of the neck). This is a Critical Safety Item. This specification delineates the Nape Pad end item and its component performance requirements. This Nape Pad is functionally integrated with the Improved Outer Tactical Vest (IOTV) (FQ/PD 07-05), Advanced Combat Helmet (AR/PD 10-02), and Enhanced Combat Helmet (GL/PD 09-04).

Purchase description AR/PD 10-02 covers the performance and verification requirements for the Advanced Combat Helmet, a protective helmet consisting of a ballistic protective shell, pad suspension system, and 4-point chinstrap/nape strap retention system.

Purchase description CO/PD 05-04 covers the performance and verification requirements for the Advanced Combat Helmet, a protective helmet consisting of a ballistically protective shell, pad suspension system, and 4-point chinstrap/napestrap retention system.

Purchase description FQ/PD 06-35 covers the performance and verification requirements for the Lightweight Fragmentation Helmet.

Purchase description GL/PD 07-19 covers the requirements for the retention system to be used with the Advanced Combat Helmet.