Item LWD-FH10 fits all Lone Wolf 10mm threaded barrels 9/16 x 24. Lone Wolf Distributors precision CNC machined flash hiders are similar to the AR-15 & M-16 A2 series flash hiders whose proprietary design is world famous! Weighing in at 1.1 ounce this long sought Glock accessory installs quickly and easily. No tools required. Virtually eliminates muzzle flash and helps preserve night vision while firing. Disperses muzzle flash preventing detection from most every position. Fit will vary on AR type applications. Will not fit Lone Wolf 40 threaded barrels. Black oxide finished.