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This is the Bushmaster .450 Complete Upper Receiver 20" Barrel Assembly. Use this Upper Receiver Assembly to add the hard hitting punch of the 450 Bushmaster to your AR Mil-spec lower receiver instantly. AR type gas operating system drastically reduces recoil for excellent second shot control. Aluminum forearm free floats the barrel optimum accuracy. Heavy barrel is hard chrome lined in bore and chamber for exceptional durability, and features 1 in 24" twist rifling, optimized for the .450 bullet. Hard anodized finish. Includes one 5 round .450 specific magazine.
*Copy of Photo ID required for purchase of any uppers.
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