PROCOMP MB 7.62MM 5/8X24 PROCOMP-762-5/8-24 Manufacturer Model Number: PROCOMP-762-5/8-24 Manufacturer: SureFire Model: Procomp Muzzle Brake Caliber: 7.62 x 51mm | 308 Win Type: Accessory-Flash Hiders Item Type: Accessory Overall Length: 2.8" Shipping Weight: 0.2 Optic Adjustable Objective: false Optic Reticle Illuminated: false