Tacfire 308 5/8X24 THREAD CROWN MB. 308 5/8x24 SPIRAL CROWN MUZZLE BRAKE Specifications for Tacfire MZ1021-3B 308 5/8X24 THREAD CROWN MB MZ10213B: Mfg Item Num: MZ10213B Supplier SKU: 104777 Category: FIREARM PARTS Features of Tacfire MZ1021-3B 308 5/8X24 THREAD CROWN MB MZ10213B: TACFIRE .308 5/8x24 SPIRAL CROWN MUZZLE BRAKE Included Accessories: CRUSHWASHER The Tacfire MZ1021-3B 308 5/8X24 THREAD CROWN MB MZ10213B is a quality addition to the TacFire lineup. For more great deals on Muzzle Brakes & Compensators by TacFire please browse our Tacfire Gun Parts page. Tacfire MZ1021-3B 308 5/8X24 THREAD CROWN MB MZ10213B