Flash hider
It is what it looks like. Fits nicely, is smaller than the slide. Figure it's better than bare threads. Not too spendy. Came coated in cosmoline, Wich is preferable. I like it.
Item LWD-FH9 fits all Lone Wolf 9mm threaded barrels 1/2 x 28.
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 1.2 ounce this long sought Glock accessory installs quickly and easily. No tools required.
*Five different models available, see them here LWD-FH