Overview Reviews Product Description Dead Air Armament Thread Adapter, 1/2 X 28 Rh, Fits Fn 5.7, Black Finish Da422Product Type: Thread AdapterFinish/Color: BlackFit: FN 5.7Description: 1/2X28 Product Videos Custom Field Product Reviews Write a Review Write a Review × Dead Air Armament Dead Air Thrd Adptr Fn 5.7 1/2x28 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *