Q Mini Fix, Short Barrel Rifle, Bolt Action, 300 Blackout, 8 Threaded Barrel, 10 Rounds, Folding Adjustable Stock, Product Finishes, Shade Variations and Other Imperfections Are Normal Due to the Manufacturing Process MINIFIX-300BLK-8IN-SBR The Mini FIX Rifle by Q is the Mini Action version of The Fix in 300BLK form. The Mini FIX has a smaller receiver, bolt assembly and accepts the M4 magazine.