DLP Tactical Centurion Center Top ARC Rail Kit for ACH/Mich/OPS Core Helmet (Delta Black) A secure, professional mounting solution to attach your expensive, helmet top mounted lights/strobes/distress markers, or other accessories to top of your combat helmet Can be permanently installed with included hardware or fastened with double sided Velcro (also included) Fiber reinforced Polymer construction is ultra-lightweight, Low-IR visibility, and non-magnetic Accepts most wing-lok / picatinny adaptors designed to fit dovetail slots on common side mounted ARC rails Fits ACH, MICH, PASGT, Lightweight Marine helmets, OPS-Core FAST or Team Wendy EXFIL helmets, or and most other helmets.