Home / Accessory-Silencer Accessories / Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28 You cannot add "Rugged Suppressors RUGGED UNIVERSAL MOUNT R.U.M." to the cart because the product is out of stock. Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28$4500 Out of stock 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! Rugged Suppressors OBSIDIAN PISTON 9/16×24 $8000 $7196 Gemtech THREAD PROTECTOR M13.5X1 LH $1800 Sale! SIG SAUER MUZZLE BRK CL 7.62MM 25 DEG $17999 $16957 Sale! Rugged Suppressors OBSIDIAN45 3 LUG ADAPT 9/16X24 $8500 $7561