Steel Tanker Style Black Muzzle Brake for .223/5.56MM Made In USA
Tanker style steel muzzle brake (black) for your .223/5.56  barrel.100% manufacture in Ontario California USA.    Material: Steel (12L13)    Process: Precision-CNC Machining    Weight: 4.1 oz    Length: 2.25 in (+/- 2%)    Width: 0.85 in (+/- 2%)    Thread: 1/2"-28    Coating: Black (Manganese Phosphate)    Crush Washer: INCLUDEDProcesses Performed Per SpecificationPhosphate: MIL-DTL-16232G (DOD-P-16232F)Type: M (Manganese)Manganese Phosphate is intended to produce highly corrosion resistant, non-metallic, manganese phosphate coatings on iron and steel surfaces. The coatings have great adherence and provide substantial protection from rust by bonding the final finish of stain, oil, wax or paint to the treated articles. The treatment produces a uniform coating and is especially suitable for rust proofing threaded pieces and articles with small holes or recesses.