Dual Adapter Set: Designed for FAST, ACH, MICH, and other helmets with ARC side rails. The two included adapters ensure versatile compatibility, making it easy to switch between different helmet models. Dynamic Multi-Angle Adjustment: Features a 360° rotational design, allowing the headset to flap up or down for quick access. The bracket's card position and stand length are also fully adjustable, ensuring a perfect fit for all 19-21mm helmet guide rails. Smart Space Optimization: The rail mount arms attach securely to the helmet's ARC side rails, leaving ample front space on the helmet top. Ideal for mounting tactical flashlights, cameras, or other essential accessories without interference. Convenient Foldable Design: Effortlessly mount your tactical headset to the helmet. When not in use, simply swivel the headset to the back of the helmet for enhanced ventilation and portability, keeping your ears cool and the headset out of the way. Integrated Cable Management: Equipped with cable management latches, the tactical helmet connection arms feature built-in buckles to neatly organize and store headphone cables. Say goodbye to tangled wires and enjoy a clutter-free setup.