The Radical Firearms 20" Big Bore profile 450 Bushmaster is a complete MIL-STD upper ready to drop on any MIL-STD lower
Receiver. Perfect for the novice or advanced shooter wanting to finish out that
build and hit the range. Built with our 15" MHR free float rail system for
increased accuracy and keeping your hands cool. No matter what your style of
shooting is, Radical Firearms has you covered.
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