All / Mounts & Adapters / Tube Thread Adapters / 1.75" Diameter All Muzzle Devices Mounts & Adapters Quick Detach Tube Thread Adapters 1.5" Diameter 1.625" Diameter 1.75" Diameter Direct Thread Reflex Decorative Caps Decorative Tubes 1-11/16 to Dead Air Adapter $125.00 Select Exterior Threads 1-11/16x20 1-11/16x24 Add To Cart 1-11/16 to 1-7/16 ADAPTER $125.00 View Options 1-11/16 to "HUB" ADAPTER $120.00 Select Exterior Threads 1-11/16x20 1-11/16x24 Add To Cart