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Optics Planet should change the product description to 1/8" twist rate not 1/7" (as of Oct 2022). The barrel on my new Radical Firearms .300 AAC BLK 8.5" upper is clearly marked "300 BLK 1/8" so I called Optics Planet to inquire. They opened an inqui...
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Product Info for Radical Firearms RF Upper Assembly 8.5in 300 AAC HBAR Contour w/ A2 Flash Hider
The Radical Firearms 8.5" Hbar profile 300 AAC Blackout is a 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.Simply add your BCG, charging handle and you are ready to go. Built with our 7" 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.