Luth-AR 5.5 Flash Hider Features The 5.5-inch extended design provides additional length which can be especially useful for pinned and welded applications on shorter barrels to meet legal length requirements. Its manganese phosphate finish enhances corrosion resistance and durability ensuring long-term reliability even in harsh environments. Crafted from 4150 steel this flash hider is built to withstand high pressures and temperatures making it a dependable choice for both tactical and recreational shooting. The 1/2x28 thread pitch ensures seamless installation on a wide range of AR-15 platforms. Luth-AR 5.5 Flash Hider Specifications Manufacturer: Luth-AR Model: 5.5 Flash Hider Material: 4150 Steel Finish: Manganese Phosphate Thread Pitch: 1/2x28 Caliber Compatibility: .223 Remington / 5.56x45mm NATO Length: 5.5 inches