Home / NFA - Silencer / SIG SAUER MCX-SURG UPGRADE KIT 5.56 FDE Sale! SIG SAUER MCX-SURG UPGRADE KIT 5.56 FDE$4,59999 Original price was: $4,59999.$4,39414Current price is: $4,39414. In stock SIG SAUER MCX-SURG UPGRADE KIT 5.56 FDE quantity Add to cart SKU: UAMCXA-SURG Category: NFA - Silencer Product ID: 97314 Description Description Direct Thread SuppressorRemovable Cage / HandguardFolding Stock w/Adapter Kit Related products Sale! FN RUSH 9TI 9MM SILENCER FDE $84900 Original price was: $84900.$73355Current price is: $73355. Sale! Gemtech ONE 7.62MM QUICK MT SILENCER # $1,09900 Original price was: $1,09900.$98663Current price is: $98663. Sale! Savage Arms AC338 338CAL BLK SILENCER $99900 Original price was: $99900.$83759Current price is: $83759. Sale! B&T STATION SIX 45ACP BLK 3″ 9+1 $2,14000 Original price was: $2,14000.$2,05476Current price is: $2,05476.