FS: Vortex Flash eliminator Original Smith enterprise for: Ar-15,M16, A2, and M4 http://www.smithenterprise.com/images/0100 L 1001BV Vortex M249 G6.jpg Contact no. 0919-2253300 http://www.smithenterprise.com/ "The Sommers Vortex Flashhider was invented, designed and refined by Sonja Sommers of Smith Enterprise, Inc. It is a patented accessory (U.S. pat. no. 5596161). The Vortex is the most copied, but never equaled, flashhider on the market. The Vortex is machined from 8620 bar stock steel, then case-hardened to provide a tough core and hard surface for maximum strength, black-parkerized finish. 21/4" long, .861" diameter. It is Sound Suppressor capable. The Vortex is not a timed item, when it is tightened that's where it is. The Vortex does not required the use of a lock washer. The Vortex conceals the flash essentially 99.999% - even on full auto."