SureFire 3-Prong Flash Hider 5/8"-24 tpi 2.60" Black DLC Stainless Steel for 6mm, 6.5mm, 260 Cal The 3-Prong Flash Hider features a patent-pending design which provides more than a 99% reduction in flash. Multiple bearing surfaces provide superior suppressor alignment and prevent ringing of tines inside suppressor. It is made from U.S. mill-certified, heat-treated stainless steel with DLC coating provides maximum protection against harsh environmental conditions and facilitates cleaning after extreme use. A labyrinth seals mitigate gas leak from suppressor lock ring. The 3-Prong Flash Hider also serves as rock-solid mounting adapter for SureFire SOCOM Series sound suppressors. (suppressor sold separately)