SureFire 3 Prong Flash Hider For M2H - Unthreaded Barrel. It is made of materials that provide maximum protection under harsh environmental conditions. Functionality is the game's name with the SureFire Flash Hiders features a rear seal that minimizes potential carbon buildup in the indexing system and facilitates suppressor removal after extended firing. Specifications for SureFire 3 Prong Flash Hider For M2H - Unthreaded Barrel: Manufacturer: SureFire Color: Black Fabric/Material: US mill-certified heat-treated stainless steel Included Accessories: Suppressor Adapter Condition: New Features of SureFire 3 Prong Flash Hider For M2H - Unthreaded Barrel Three-prong design produces effective flash reduction Robust tines allow for extreme durability Precision CNC machined from USA mill-certified bar stock DLC-coated flash hider provides maximum protection against harsh environmental conditions and facilitates cleaning after use Nitride-coated heat-treated chromoly coupler allows for maximum attachment strength Package Contents: SureFire 3 Prong Flash Hider For M2H - Unthreaded Barrel What firearm models does the manufacturer say SureFire 3 Prong Flash Hider For M2H - Unthreaded Barrel is compatible with? The manufacturer says that SureFire 3 Prong Flash Hider For M2H - Unthreaded Barrel is compatible with M2HB Machine GunSureFire 3-Prong Flash Hider/Suppressor Adapter 6.8mm SPC 5/8-24 Threads