OPS-CORE vs. ACH/ECH COMPATIBILITY
The Ops-Core version of the 4D Combat Liner is designed for helmets equipped with the Ops-Core OCC Dial Fit-Band suspension system and used in conjunction with the EPP brow pad, and includes a 1/2″ brow pad and nape pad. Ops-Core helmets with the Vented Lux Liner can use either pad set depending on the preferred brow pad thickness. The ACH/ECH version includes a 3/4″ brow pad intended for direct attachment to the helmet shell and is recommended for helmets without an integrated brow pad or when the existing brow pad is removed. Compatibility with unlicensed Ops-Core-style helmets cannot be guaranteed—use the Ops-Core variant for helmets with the OCC Dial system, and the ACH/ECH version for all other helmet types and configurations.
| SPECIFICATION | |
|---|---|
| Sizing | Universal |
| Accommodates | ACH, MICH, LWH, Crye Precision, Ops-Core, MTEK, Revision, Gentex, BAE, United Shield, and others |
| Impact Test | Independent Lab & DoD Tested; Meets/Exceeds ACH Impact Spec (USMC SMART-TE ACH Test) |
| Materials | High & Medium Density Closed Cell Foam, Anti-Microbial, Thermal Regulating Fabric |
| Manufactured | USA – Berry Amendment (10 U.S.C 2533a) Compliant |
Important: For hygiene reasons, opened pad sets are non-returnable. Requests to change pad sets after shipment may be subject to a restocking fee. Please verify your selection before ordering.
Ops-Core (OCC or Worm Dial) Standard Retrofit Liner Includes:
- (1) Front pad
- (1) Large oval rear pad
- (1) Nape pad
- (4) Crown pads: (2) 3/4″ and (2) 1″
ACH / CRYE / TW Helmet Standard Retrofit Liner Includes:
- (1) Front pad
- (1) Large oval rear pad
- (4) Crown pads: (2) 3/4″ and (2) 1″
