Q LLC 90 Degree Taper Adapter - 1/2x28

Does your barrel have a tapered muzzle shoulder but you need to use shims for your muzzle brake? Do you use silencers that requires a 90deg square shoulder? If you answered "yes" to either of these questions, then use this Taper Adapter to convert your scientifically engineered 1/2-28 muzzle into a traditional 90deg, non-scientific shoulder. SPECS: MATERIAL: 17-4 Stainless Steel COATING: Heat Treat (color may vary)