HUXWRX FLOW 556K 5.56 with quick detach flash hider - 1/2X28 Black Back pressure and gas in your face are two big problems with many suppressors, but not with the FLOW 556K. Made from 3D-printed stainless steel (welcome to the future!), HUXWRX has designed a compact suppressor that doesn't sacrifice performance for size. It passed all of the US Government's official tests with flying colors and is full-auto rated even on short barrels. Their patented Flow-Through technology directs gas out the front, minimizing the gas that comes back to the shooter's face from the bolt or the charging handle. The flash cap on the front also mitigates muzzle flash, making it an ideal choice in low-light situations. At just 5.5" inches in length and 12.9 ounces in weight, the FLOW 556K is in a league of its own when it comes to design, durability, and performance.