Home / Accessory-Silencer Accessories / Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28 View cart “Gemtech THREAD PROTECTOR 1/2-28 RF” has been added to your cart. Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28$4500 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! Dead Air Armament XENO MOUNT FLASH HIDER 5/8X24 $8900 Original price was: $8900.$8472Current price is: $8472. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 Original price was: $7495.$7135Current price is: $7135. Sale! Dead Air Armament WOLVERINE INSERT 24MM RH LONG $8900 Original price was: $8900.$7865Current price is: $7865. Sale! Rugged Suppressors OBSIDIAN PISTON 9/16×24 $8000 Original price was: $8000.$7196Current price is: $7196.