Home / Accessory-Silencer Accessories / Dead Air Armament FN 5.7 THREAD ADAPTER 1/2X28 View cart “Dead Air Armament SANDMAN 5.56 FRONT CAP” has been added to your cart. 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! Gemtech ADAPTER SIG MOSQUITO $4500 $4183 Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 $16957 Sale! Rugged Suppressors OBSIDIAN9 3 LUG ADAPT 13.5x1L $8500 $7561 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 $7135