Energetic Armament EA25 Direct Thread Adapters 11/16x24 Titanium
https://www.tandktactical.com/shop/853406008251-energetic-armament-ea25-direct-thread-adapters-11-16x24-titanium-42076
https://www.tandktactical.com/web/image/product.template/42076/image_1920?unique=2d5442e
fits Industry standard 1.375"x24 thread
