Titanium 3 Port “Bruin” Muzzle Brake Titanium 3 Port “Bruin” Muzzle Brake Specifications: Thread Pitch: 5/8-24 Length: 2.230 inches long Weight: 2.0 ounces Material: Grade 5 Titanium Diameter: .995 with a taper on timing nut to .970. Bore Diameter: Intended for cartridges as small as 223 Remington all the way up to 338-378 Weatherby!   Each and every muzzle brake is carefully inspected, chamfered, deburred & polished before shipping.     J&A Outdoors – Firearm Solutions – Shooting Products (jaoutdoors.com)