Features & Specifications
- With a shell weight of just 1.23 lbs/557 grams (Size L) and ballistic protection from 9mm rounds (1200 fps), the FAST SF offers the same level of ballistic protection as its predecessor but with a 10% reduction in overall system weight.
- LockDown Liner System incorporates a user-customizable suspension system with multiple strategically placed pads, encouraging airflow. The LockDown Comfort Liner, featuring moisture-wicking fabric and reticulated foam, offers adaptable density for diverse head shapes and comfortably supports heavy VAS and NVG systems.
- LockDown conformable nape pad and cable Occ-Dial® offer enhanced stability, securing a larger contact area on the rear of the user’s head, adapting to individual contours for an improved fit compared to other, more rigid systems.
- LockDown cable system enables an interference-free fit with headband communication systems.
- Redesigned Head-Loc Flex retention system introduces a unique convertible chin cup that can be worn either over or under the chin, eliminating the need for a mask extender with the 02 and CBRN kit for most users.
- PowerPathâ„¢ ARC Rail system provides a lightweight mounting solution for Ops-Core headborne systems and features a unique, behind the rail channel for the safe routing of NVG cables.
- Lightweight Modular Bungee Shroud (MBS) reduces snag hazards and features carabiner clips to improve NVG retention and stability while reducing interference with other rail-mounted accessories.
- External VELCRO® Brand loop kit allows for quick and easy attachment and detachment of headborne accessories.
Suspension & Retention Options
The LockDown Liner System is a universal suspension solution that enhances comfort, airflow, and stability for heavy VAS and NVG setups. Featuring LockDown Fit Shims and a Cable Occ-Dial® with a conformal nape pad, it ensures a secure, customizable fit for any head shape, delivering unmatched performance in demanding conditions.
The Head-Loc FLEX retention system – featuring a convertible chin cup that adapts to your needs. Wear it under the chin for comfort or over the chin for added stability, with adjustable positioning to ensure a perfect, personalized fir for every user.
Testing Protocols & Design
- Performance Specification: Modified and Abbreviated Family of Tactical Headborne Systems, dated June 30th 2017; Ops-Core Performance Specification FAST SF PS-1608
- NIJ Standards: NIJ 0106.01 with NIJ 0108.01 Level IIIA (9mm FMJ @1,400 ft/s) Threats




O P Tactical Inc. Body Armor Policy:
Purchaser is solely responsible for complying with all applicable laws. Purchaser assumes all responsibility for their purchase, to include knowing local laws regarding body armor. Law Enforcement or Military only for New York and Connecticut residents per State law. Email or call us regarding sales to New York or Connecticut residents.
OPT assumes no responsibility for body armor purchases made in violation of federal, state or local laws.
There are no returns or exchanges on body armor items. Please be sure of your size before ordering.
(R)= No Export Sales, Restricted to US orders ONLY, if where you are requires a customs label, we cannot ship armor items there, this includes APO/FPO addresses.
UPS SHIPPING OPTIONS ONLY. No $7.95 Flat Rate for this item. This is to properly insure it. If you choose the wrong shipping method it will delay your order.
This Item is Excluded from Limited Sale Coupon Codes.





