Want to trade brand new in box Sig MCX Regulator. Unfired with all the original stuff. Will come with one 10 round PMAG. The upper is just a standard 16” MCX upper and will work with any MCX lower or AR 15 lower with the Sig adapter. I’m looking to trade it for a 5.56 AR alternative (Bren, Tavor, ARX, XCR, etc) but will consider all trade options. Text Luke at 2543344957