The Radical Firearms 8.5" HBAR profile 300BLK 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 7" FQR 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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