New Unfired AR-15 Upper, 350 Legend. I have a new AR 15 pistol upper with 12.5 inch. barrel, never fired Moriarti Arms. This is a custom upper 350 Legend With BCG and Charging handle. Competition Muzzle brake in Nitrade, Quadrail system. Willing to trade for ammo in any of the following calibers, .223/5.56, 300 blk-out or 6.5 Grendel for equal value. Asking $500.00 or best offer.