I am offering for sale one Sig MCX Virtus Upper Receiver and Bolt Carrier Group. Both are essentially new condition. Sig sells the BCG for $649.99 and the Upper Receiver for $549.99 at Sig’s online store. I am asking $525 for the BCG and $425 for the Upper Receiver, which includes shipping to CONUS. Buy both for a combined $899! Photos available upon request vis email.