Tactical Precision Manufacturing TPM .30 Cal 1/2x28 Titanium Muzzle Brake Polished Titanium 1/2x28 MBR-3012-TI. 05 oz(22 cal) and 0.67 oz(30 cal) Material: Titanium Specifications for Tactical Precision Manufacturing TPM .30 Cal 1/2x28 Titanium Muzzle...