Stag 15 5.56 M4 Upper Receivers - Stag 15l Left Hand M4 Phosphate Upper

No matter how many options emerge in the massive AR-15 market, there's always going to be a demand for that classic, M4-style configuration that's been proven on battlefields across the world. Now, you can have an AR-15 that's built to the same standards and with the same features as the M4 Carbine that's served with our military for decades. This is the Stag Arms Stag-15 M4 Upper Receiver. True to form, the Stag Arms Stag-15 M4 Upper Receiver is everything you're looking for in a GI-spec syste