Yankee Hill Machine Company Low Profile Flash Hider Features The Yankee Hill Machine Low Profile Flash Hider threads onto any 1/2x28 muzzle making it a direct fit for most 5.56mm and .223 caliber AR-15 pattern barrels. Its low profile 0.735 inch diameter design is specifically shaped to allow gas blocks with a .75 inch inside diameter to slide on or off without needing to remove the flash hider first a real convenience during builds or when swapping handguards. The Melonite QPQ finish protects the steel body from corrosion and the heat generated at the muzzle during sustained firing. At just 1.8 ounces it adds minimal weight to the front of the rifle. Measuring 2.225 inches in length this flash hider keeps the muzzle profile compact while still managing muzzle flash effectively for low-light shooting. An included low profile crush washer ensures proper alignment and torque when installing the device onto the barrel threads. Built from steel for long-term durability it stands up to repeated firing without degrading. For sale at GrabAGun this Yankee Hill Machine flash hider is a reliable low-cost muzzle device for AR-15 builders working with low profile gas blocks. Yankee Hill Machine Company Low Profile Flash Hider Specifications Manufacturer: Yankee Hill Machine Company Model: Low Profile Flash Hider Material: Steel Finish: Melonite QPQ Length: 2.225 Diameter: 0.735 Weight: 1.8 oz Thread Pitch: 1/2x28 Available At: GrabAGun