HK Army HSTL GOGGLE w/ Thermal - Black Proflex Parts The Freak Insert is at

The Freak Insert is at the literal core of the Freak barrel system

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+ Microswitch Trigger Operation

but now you have a built in battery indicator to verify exactly when to recharge

Vents spread throughout the goggle to enhance breathability and hearing

HK Army HSTL GOGGLE w/ Thermal - Black Proflex Parts The Freak Insert is atHSTL Goggle System Composed of a robust blend of thermoplastic, the design of the HSTL face mask protects critical areas of the user, while still promoting supreme breathability and freedom of movement. The HSTL Goggle System features the quick change lens retention system which allows the player to replace their lens in seconds without the use of tools. Details Snap in place removable upper and lower goggle foam insert Optically correct high