1791 Industries has just launched ultra-lightweight upper and lower AR-15 receivers called the LiteRaider series.The original AR-15 design was always lauded for how lightweight it is, but 1791 Industries decided that they could make it even lighter without making any compromises. Hence, the company’s new LiteRaider LRM4 upper and lower receivers.The LiteRaider LRM4 upper and lower receivers are made of Metal Matrix Composite (MMC), and 1791 Industries says that it’s 33 percent lighter than aluminum while offering “comparable strength and durability to 7075-T6 aluminum.” The company says that MMC has better thermal resistance and vibration dampening than aluminum as well.…

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