Advanced Army Combat HelmetWhat is it'The Advanced Army Combat Helmet (ACH) provides ballistic and impact protection, stability, and comfort without degrading the Soldier's field of vision and hearing. Two basic components of the ACH are the retention system and pad suspension system.What has the Army done'Many Soldiers are purchasing ACH pads and retention systems through unauthorized channels, to include General Services Administration Advantage, and local retail and Internet stores. In most cases, these items do not meet Army protection and safety standards and many have failed Army safety testing. The only authorized supply source for these items is the Department of Defense Supply System. The Army has streamlined the process so supply sergeants who need to requisition ACH chinstraps can order them without purchasing the entire retention system. The chinstrap, without hardware, can be ordered using National Stock Number (NSN) 8470-01-531-3351. This NSN will fit all ACH models.What efforts does the Army plan to continue in the future'Leaders must ensure Soldiers and units do not order ACH pads or retention systems through any source other than the Department of Defense Supply System. Personnel who have items not procured from authorized sources are to notify their unit supply activity. To obtain authorized replacements, the unit supply activity will submit requisitions through approved supply channels or take appropriate action through the local supporting Central Issue Facility (CIF).Why is this important to the Army'Soldiers who choose to order their ACH pads or retention systems through unauthorized channels are jeopardizing their safety and protection.Resources:Log-in in to Army Knowledge Online required: <a href=" " target="_blank"> All-Army Activities (ALARACT) 209/2009, published Jul. 31, 09</a>For maintenance of ACH: <a href="" target="_blank">Technical Operator's Manual for ACH</a> (LogisticsInformation Warehouse (LIW) account, with ETM access, is required)