1. New and never fired in box Genuine replacement barrel for the 5.5" 5.56NATO Rattler. Complete with barrel and gas block assembly..and bolt

This Barrel is compatible with the Rattler ONLY. This barrel is not compatible with the MCX Virtus or Legacy MCX Uppers.
It will not function with a factory .300BLK hand-guard. This barrel requires the 5.56NATO Rattler handguard. Sig Sauer MCX Rattler 5.5" Caliber Exchange Kit, 5.56 NATO, Tapered Lug. So if you have a Sig MCX Rattler 300 BLK you can turn into 5.56 cal. Or have a spare SIG MCX 5,56 barrel
$300 shipped



2. New in box Sig Sauer MCX Rattler 5.56 NATO Handguard, aluminum Low Profile, M-LOK, Black
$100 shipped

SOLD