Home / Accessory-Silencer Accessories / Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28 Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28$4500 Only 2 left in stock Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28 quantity Add to cart SKU: DA422 Category: Accessory-Silencer Accessories Product ID: 33718 Description Description For FN 5.7Requires aftermarket barrelWill not work on OEM barrel Related products Sale! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH $7895 Original price was: $7895.$7188Current price is: $7188. Sale! Dead Air Armament XENO MOUNT FLASH HIDER 1/2X28 $8900 Original price was: $8900.$8472Current price is: $8472. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7895 Original price was: $7895.$7188Current price is: $7188. SilencerCo O-RING BOOSTER PACK $900