Brand New LWRC M6A2 Short Stroke Gas Piston AR-15, 5.56 NATO, 16.1" barrel, Mid-length Rail System, Low profile Gasblock. Magpul CTR stock, Magpul Miad basic grip, and Magpul enhanced trigger guard included. These are the latest models, they feature a Cold Hammer Forged Barrel with a ferritic salt bath nitro carburized interior and exterior finish. This finishing process is also applied to the barrel extension and gas port. This finishing process is a surface conversion process in place of industrial hard chrome and is therefore inherently free from nodules, flaking, pits, stripping, or anode burrs. The finish is also applied to the barrel extension, gas port and piston parts. FREE Shipping! No Credit Card Fees!