Shop › REAL AVID MSTR FIT30MM BBL NUT WRE REAL AVID MSTR FIT30MM BBL NUT WRE $29.99 Real Avid Master-Fit Wrench, Wrench, Stainless Steel, 30mm Free-Float Barrel Nut AVMF30BNW Quantity: Add To Cart Added! Real Avid Master-Fit Wrench, Wrench, Stainless Steel, 30mm Free-Float Barrel Nut AVMF30BNW