GC_UPC TacFire Complete M-LOK Upper Assembly, .300 Blackout , 10in, Type III Hard Anodized, Black, Large, BU-3008-10 $314.99 BU300810 show more like this Dvor GC_UPC TacFire Complete M-LOK Upper Assembly, .300 Blackout , 10in, Type III Hard Anodized, Black, Large, BU-3008-10 $314.99 BU300810 show more like this Free Shipping on most orders over $49 Optics Planet