Details
This is a brand new Sig Sauer MCX Conversion kit to convert your MCX to .300 Blackout with a 6.75" barrel. This kit will ONLY work with the Virtus series or an MCX that has "-TAP" in the part number UNLESS you purchase and install the updated tapered lug bolt on your older MCX. Bolts are not included. APP MCX Conversion kits have chrome-lined barrels which differentiate themselves from the commercial variants.