Magnum Research MLR22WMHGT : The accuracy of Magnum Research MLR rifles has become legendary. The MLR was designed and is entirely manufactured in the United States. It was engineered to be the manifestation of the terms lightweight and performance in a rimfire rifle. At the heart of the MLR rifle is the one piece, forged 6061-T6 receiver. All receivers are black hard coat anodized for durability and wear.