RIX BM-01 Helmet Mount for Stride Series Thermal Imaging Monoculars, Adjustable Sliding Rod Design, Left/Right Eye Switchable, Compatible with ST3 Lite & ST6 Lite, Includes M5 & 1/4" Adapters

If you are talking about this mount then yes. It should mount to a Wilcox G24 with no issues. You will have height, ride and tilt adjustment from the Wilcox and then some adjustment from the adapter bridge. You won't need a J-Arm as this essentially is the J-Arm.