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Ops-Core Sentry Mandible - HCC Tactical

Sentry Mandible

Regular price $791.00 Sale

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Product Details

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

You will be required to fill out our EAR Compliance form (click here) prior to your order shipping.

Lead time can be between 1-16 weeks depending on product availability at time of order. Contact us prior to placing your order for up-to-date lead times.

  • Designed for Ops-Core Sentry XP and LE Mid-Cut Helmets.
  • Provides additional face protection from ballistic and blunt impact.
  • Pair with an Ops-Core Sentry Visor for complete eye and face protection.
  • Unique patented hinge front system provides natural ventilation, which greatly reduces lens fogging, while increasing user comfort.
  • A seamless connection to the Sentry ARC Rail System leaves space for mission critical accessories and components such as cameras, illumination, and other adapters.
  • Folds in half for compact storage and less displacement in a ruck sack or back pack.
  • Tool-less installation and fit to the helmet is easy via the connecting straps that can be adjusted to ensure proper fit and function.
  • Can be donned and doffed with one gloved hand.
  • Designed with Low-Reflective and Low Infra-Red (IR) signature characteristics.
  • Available in Urban Tan, Foliage Green, and Black.

Testing, Protocols, and Design

  • Designed and tested in accordance with Gentex PRS-1000 Product Specification for the Ops-Core Sentry Ballistic Mandible.
  • Meets Blunt Impact Protection to a Modified and Abbreviated U.S. Army Purchase Description Helmet, Advanced Combat (ACH) CO/PD-05-04: 30 October 2007. (Blunt Impact Protection is measured with two impacts in the front center portion of the mandible at 5 Feet Per Second on a Hemispheric Anvil with no impact measuring over 150 G of force tested in ambient, hot and cold conditions.)
  • Environmental affects testing: seawater resistant; weatherometer (accelerated aging); high temperature operating and storage; cold temperature operating and storage; field agent resistant (DEET insect repellant, gasoline, motor oil, petroleum based hydraulic fluid, fire resistant hydraulic fluid, diesel fuel oil, aviation turbine fuel, rifle bore cleaning compound, weapons lubricating oil, and face paint).
  • Ballistic mandible tested against the 9mm 124gr FMJ RN at 1400 fps (+/- 50 fps) Resistance to Penetration (RtP) protocol tested in ambient, hot and cold conditions; and the 17 grain (1.1 gram) Fragment Simulated Projectile (FSP) using a baseline testing method to establish a minimum V-50 of 1850 feet per second (fps) / 564 meters per second (m/s). (V-50 is defined as the velocity of a designated projectile where 50% of the threat will penetrate and 50% will be stopped.)


  • Ballistic resistant pucks used in the mandible are a hybrid design of uni-directional polyethylene and aramid materials.
  • Mandible frame is constructed from high impact injected molded plastic.

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