The maglula m1a/m14 lula loader/unloader loads 10 20 and 30 round m1a type magazines and AR-10 magazines with a rear catch. It is simple to use in either loading or unloading mode. The loader/unloader eliminates thumb pain and wear on feed lips. It also prolongs magazine life. It is lightweight and small enough to fit in your pocket. The loader/unloader is crafted from durable reinforced polymer and is reliable in all weather.Caliber: 308 Win/7.62x51Finish: BlackModel: Loader and UnloaderMaterial: PolymerModel Fit: M1A M14