Sig Sauer MCX Virtus Caliber Exchange Kit 300 Blackout 6.75" Black Nitride Carbon Steel Barrel with Three Prong Flash Hider & Gas Block Assembly for AR-15
The official conversion kit for your MCX Virtus. Convert your AR15 to the 6.75" 300 Blackout MCX Virtus. Complete with Virtus barrel and gas block assembly.
