Featured Brands














SIHSS
Mechanix Wear Gloves Sizing Chart
5.11 Tactical Clothing and Footwear Sizing Chart Guide
Condor Outdoor Clothing and Apparel Sizing Guide
Hazard 4 Clothing Sizing Chart
Footwear Sizing Chart and Guide
Merrell Tactical Footwear Sizing Guide
Milspec / Rothco Sizing Charts
Pentagon Tactical Sizing Chart
PPSS Stab and Impact Resistant Vest Sizing Guide
Safariland Hatch Glove Sizing Chart
Headwear, Hats and Boonies Sizing Chart
For clothing use standard sizes
Question regarding sizes, need help? contact our team
Tactical distributors Pty Ltd (Tactical Gear) ships from various warehouses throughout Australia and the United States. Shipping timelines are specified on each product page.
The Sentinel Inside Helmet Skullcrusher System is built for operators who demand a lightweight, low-profile mounting solution without sacrificing stability or comfort. Engineered for secure use inside helmets, the system eliminates the bulk of traditional headgear while providing a rock-solid platform for night vision devices and optics.
Its streamlined frame distributes pressure evenly across the head, reducing fatigue during extended missions, training, or reconnaissance. The minimalist design keeps it compact and breathable, ensuring compatibility with OPSCORE high cut ballistic helmet interiors. Rugged construction and adjustable fit make it adaptable to any operator’s loadout, while quick-attach points allow for rapid deployment when every second counts.
Whether in the field or on the range, the Sentinel Inside Helmet Skullcrusher System delivers uncompromising performance where it matters most.
The system allows for mounting any night vision device, cable management, counterweight pouch, or battery pack. It is compatible with the Wilcox lanyard and features a one-size-fits-all design, accommodating helmet sizes from Small to X-Large.
Conversion takes approximately 10 minutes to transform your existing ballistic OPS-CORE helmet into a fully functional system. An OPS-CORE chinstrap system is required for proper installation.
DISCLOSURE: Helmet, chin straps, night vision devices, and other attached accessories are not included. Items shown are for presentation purposes only.